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132-631: Ars Electronica Linz GmbH is an Austrian cultural, educational and scientific institute active in the field of new media art , founded in Linz in 1979. It is based at the Ars Electronica Center (AEC), which houses the Museum of the Future, in the city of Linz. Ars Electronica's activities focus on the interlinkages between art, technology and society. It runs an annual festival, and manages

264-626: A Greater Austria or just the German Confederation without Austria at all. As Austria was not willing to relinquish its German-speaking territories to what would become the German Empire of 1848 , the crown of the newly formed empire was offered to the Prussian King Friedrich Wilhelm IV . In 1864, Austria and Prussia fought together against Denmark and secured the independence from Denmark of

396-742: A chancellor as head of government and chief executive. Austria has the 13th highest nominal GDP per capita with high standards of living. The country has been a member of the United Nations since 1955 and of the European Union since 1995. It hosts the Organization for Security and Co-operation in Europe (OSCE) and the Organization of the Petroleum Exporting Countries (OPEC) and is a founding member of

528-563: A GaAs p-n junction light emitter and an electrically isolated semiconductor photodetector. On August 8, 1962, Biard and Pittman filed a patent titled "Semiconductor Radiant Diode" based on their findings, which described a zinc-diffused p–n junction LED with a spaced cathode contact to allow for efficient emission of infrared light under forward bias . After establishing the priority of their work based on engineering notebooks predating submissions from G.E. Labs, RCA Research Labs, IBM Research Labs, Bell Labs , and Lincoln Lab at MIT ,

660-463: A computer near the exit and it gives statistic information about the things that happened in the world during the span of the stay in the AEC. The list that is printed out gives information about how many people died or were born during that time or how many accidents have been caused by drunken drivers. The last floor is called Virtual Reality and it can be found in the basement of the building. The CAVE

792-671: A current source of a battery or a pulse generator and with a comparison to a variant, pure, crystal in 1953. Rubin Braunstein of the Radio Corporation of America reported on infrared emission from gallium arsenide (GaAs) and other semiconductor alloys in 1955. Braunstein observed infrared emission generated by simple diode structures using gallium antimonide (GaSb), GaAs, indium phosphide (InP), and silicon-germanium (SiGe) alloys at room temperature and at 77  kelvins . In 1957, Braunstein further demonstrated that

924-743: A democratic republic and part of the new German republic. The constitution, renaming the Staatsrat as Bundesregierung (federal government) and Nationalversammlung as Nationalrat (national council) was passed on 10 November 1920. The Treaty of Saint-Germain of 1919 (for Hungary the Treaty of Trianon of 1920) confirmed and consolidated the new order of Central Europe which to a great extent had been established in November 1918, creating new states and altering others. The German-speaking parts of Austria which had been part of Austria-Hungary were reduced to

1056-554: A glass window or lens to let the light out. Modern indicator LEDs are packed in transparent molded plastic cases, tubular or rectangular in shape, and often tinted to match the device color. Infrared devices may be dyed, to block visible light. More complex packages have been adapted for efficient heat dissipation in high-power LEDs . Surface-mounted LEDs further reduce the package size. LEDs intended for use with fiber optics cables may be provided with an optical connector. The first blue -violet LED, using magnesium-doped gallium nitride

1188-560: A government, called Staatsrat . This new government was invited by the Emperor to take part in the decision on the planned armistice with Italy but refrained from this business. This left the responsibility for the end of the war, on 3 November 1918, solely to the emperor and his government. On 11 November, the emperor, advised by ministers of the old and the new governments, declared he would not take part in state business any more; on 12 November, German-Austria, by law, declared itself to be

1320-512: A local (Bavarian) dialect. Austria was a prefecture of Bavaria created in 976. The word "Austria" is a Latinisation of the German name and was first recorded in the 12th century. At the time, the Danube basin of Austria ( Upper and Lower Austria ) was the easternmost extent of Bavaria. The area that is now Austria was settled in pre-Roman times by various Celtic tribes, having been the core of

1452-568: A longer lifetime, improved physical robustness, smaller sizes, and faster switching. In exchange for these generally favorable attributes, disadvantages of LEDs include electrical limitations to low voltage and generally to DC (not AC) power, the inability to provide steady illumination from a pulsing DC or an AC electrical supply source, and a lesser maximum operating temperature and storage temperature. LEDs are transducers of electricity into light. They operate in reverse of photodiodes , which convert light into electricity. Electroluminescence as

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1584-485: A loudspeaker. Intercepting the beam stopped the music. We had a great deal of fun playing with this setup." In September 1961, while working at Texas Instruments in Dallas , Texas , James R. Biard and Gary Pittman discovered near-infrared (900 nm) light emission from a tunnel diode they had constructed on a GaAs substrate. By October 1961, they had demonstrated efficient light emission and signal coupling between

1716-557: A method for producing high-brightness blue LEDs using a new two-step process in 1991. In 2015, a US court ruled that three Taiwanese companies had infringed Moustakas's prior patent, and ordered them to pay licensing fees of not less than US$ 13 million. Two years later, in 1993, high-brightness blue LEDs were demonstrated by Shuji Nakamura of Nichia Corporation using a gallium nitride (GaN) growth process. These LEDs had efficiencies of 10%. In parallel, Isamu Akasaki and Hiroshi Amano of Nagoya University were working on developing

1848-666: A multidisciplinary media arts R&D facility known as the Futurelab. It also confers the Prix Ars Electronica awards. Ars Electronica began with its first festival in September 1979. Its founders were Hannes Leopoldseder, Hubert Bognermayr , Herbert W. Franke , and Ulrich Rützel. The festival was held biennially at first, and annually since 1986. The Prix Ars Electronica was inaugurated in 1987 and has been awarded every year since then. Ars Electronica Linz GmbH

1980-523: A phenomenon was discovered in 1907 by the English experimenter Henry Joseph Round of Marconi Labs , using a crystal of silicon carbide and a cat's-whisker detector . Russian inventor Oleg Losev reported the creation of the first LED in 1927. His research was distributed in Soviet, German and British scientific journals, but no practical use was made of the discovery for several decades, partly due to

2112-574: A phosphor-silicon mixture on the LED using techniques such as jet dispensing, and allowing the solvents to evaporate, the LEDs are often tested, and placed on tapes for SMT placement equipment for use in LED light bulb production. Some "remote phosphor" LED light bulbs use a single plastic cover with YAG phosphor for one or several blue LEDs, instead of using phosphor coatings on single-chip white LEDs. Ce:YAG phosphors and epoxy in LEDs can degrade with use, and

2244-550: A place for researching and trying out new cyberarts technologies. See also the Prix Ars Electronica , a yearly award ceremony given out by Ars Electronica at their cyberarts festival. Since 2004, one of the awards at the Prix Ars Electronica brings a young innovator or team of innovators to the FutureLab for a summer to develop a budding idea or technology in electronic media. The annual Ars Electronica Festival

2376-660: A population of around 9 million. The area of today's Austria has been inhabited since at least the Paleolithic period . Around 400 BC, it was inhabited by the Celts and then annexed by the Romans in the late 1st century BC. Christianization in the region began in the 4th and 5th centuries, during the late Roman period , followed by the arrival of numerous Germanic tribes during the Migration Period . Austria, as

2508-508: A red light-emitting diode. GaAsP was the basis for the first wave of commercial LEDs emitting visible light. It was mass produced by the Monsanto and Hewlett-Packard companies and used widely for displays in calculators and wrist watches. M. George Craford , a former graduate student of Holonyak, invented the first yellow LED and improved the brightness of red and red-orange LEDs by a factor of ten in 1972. In 1976, T. P. Pearsall designed

2640-720: A referendum which confirmed the union with Germany in April 1938. Parliamentary elections were held in Germany (including recently annexed Austria) on 10 April 1938. They were the final elections to the Reichstag during Nazi rule, and they took the form of a single-question referendum asking whether voters approved of a single Nazi-party list for the 813-member Reichstag, as well as the recent annexation of Austria (the Anschluss ). Jews, Roma and Sinti were not allowed to vote. Turnout in

2772-469: A result, Ottokar II of Bohemia effectively assumed control of the duchies of Austria, Styria, and Carinthia . His reign came to an end with his defeat at Dürnkrut at the hands of Rudolph I of Germany in 1278. Thereafter, until World War I, Austria's history was largely that of its ruling dynasty, the Habsburgs . In the 14th and 15th centuries, the Habsburgs began to accumulate other provinces in

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2904-473: A rump state named the Republic of German-Austria (German: Republik Deutschösterreich ), though excluding the predominantly German-speaking South Tyrol . The desire for the annexation of Austria to Germany was a popular opinion shared by all social circles in both Austria and Germany. On 12 November, German-Austria was declared a republic, and named Social Democrat Karl Renner as provisional chancellor. On

3036-411: A screen if they are touched. The little room between the first and the ground floor one of the main attractions is offered. The flight simulator "Humphrey" uses virtual reality goggles to give users a simulated view of the flight and the person taking the trip is connected to the computer by cables fixed all over the body. It is possible to fly everywhere and to see the movements of the hands, feet, and

3168-639: A specific work of art or for another form of innovation. Grover (2008) has described the top-ranking award, the Golden Nica, as "the Oscar of digital art". The prize was first awarded in 1987, and there have been several changes in the categories since then. In 2014, there were 2,703 entries from 77 countries. All entries remain on display in an online archive, the Prix Ars Electronica Showcase, containing over 55,000 items. Awards of

3300-646: A unified state, emerged from the remnants of the Eastern and Hungarian March at the end of the first millennium , first as a frontier march of the Holy Roman Empire , it then developed into a duchy in 1156, and was made an Archduchy in 1453. Being the heartland of the Habsburg monarchy since the late 13th century, Austria was a major imperial power in Central Europe for centuries and from

3432-676: A vehement opponent of the Nazis, the last Crown Prince of Austria-Hungary, an honorary citizen of hundreds of places in Austria and partly envisaged by Schuschnigg as a monarchical option, was in Belgium at the time. He spoke out against the Anschluss and was then wanted by the Nazi regime and his property would have been expropriated and he would have been shot immediately if he were caught. In 1938,

3564-488: A wide range of possibilities. It consists of two walls (front and floor) with dimensions of 16 × 9 meters which serve as screens for eight Galaxy NH-12 projectors by Barco . The projects range from high-resolution videos to scientific (3D) visualizations like a flight out from the solar system to the whole known universe and artistic projects. The same building holds the Ars Electronica FutureLab,

3696-776: Is a gathering of artists, scientists and technologists, intended as "a setting for experimentation, evaluation and reinvention". The festival has always exerted a public presence in Linz, mounting large-scale open-air projects and holding lectures, discussions and workshops in a wide range of public venues. Each year the festival is devoted to a specific theme. The festival in 2014, had as its theme "C... What it Takes to Change", i.e. ways in which social change and innovation can be promoted. It attracted 579 participants and about 85,000 visitors. A form of concept art , device art has been described as "a rebellion of form, taking everyday objects and inverting them to tell you something different". Among

3828-765: Is another attraction of the museum. The cube with 3 meters side length is used as a screen to project the virtual world . There are always groups of about 10 that dive into a world where physical laws do not have any meaning. Additionally, the 3D spectacles give the impression of a bodyful environment. The new Ars Electronica Center, which was designed by Treusch architecture ZT GmbH, opened its doors on 2 January 2009 after roughly two years of construction work and an approximate cost of 30 million euros. It now has 3000 square meters for exhibitions, 100 m for research and development, 400 m for workshops and conferences, 650 m for catering and another 1000 m of public space for various types of events. The new AEC consists of

3960-550: Is difficult but desirable since it takes advantage of existing semiconductor manufacturing infrastructure. It allows for the wafer-level packaging of LED dies resulting in extremely small LED packages. GaN is often deposited using metalorganic vapour-phase epitaxy (MOCVD), and it also uses lift-off . Even though white light can be created using individual red, green and blue LEDs, this results in poor color rendering , since only three narrow bands of wavelengths of light are being emitted. The attainment of high efficiency blue LEDs

4092-492: Is difficult on silicon , while others, like the University of Cambridge, choose a multi-layer structure, in order to reduce (crystal) lattice mismatch and different thermal expansion ratios, to avoid cracking of the LED chip at high temperatures (e.g. during manufacturing), reduce heat generation and increase luminous efficiency. Sapphire substrate patterning can be carried out with nanoimprint lithography . GaN-on-Si

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4224-794: Is more apparent with higher concentrations of Ce:YAG in phosphor-silicone mixtures, because the Ce:YAG decomposes with use. The output of LEDs can shift to yellow over time due to degradation of the silicone. There are several variants of Ce:YAG, and manufacturers in many cases do not reveal the exact composition of their Ce:YAG offerings. Several other phosphors are available for phosphor-converted LEDs to produce several colors such as red, which uses nitrosilicate phosphors, and many other kinds of phosphor materials exist for LEDs such as phosphors based on oxides, oxynitrides, oxyhalides, halides, nitrides, sulfides, quantum dots, and inorganic-organic hybrid semiconductors. A single LED can have several phosphors at

4356-553: Is now Austria's National Day , a public holiday. The status of Tyrol was a lingering problem between Austria and Italy . To this day, there are 20 different squares in Austrian cities called "Südtiroler Platz" (South Tyrolean Square) in memory of the supposed loss of the Austrian territories. Terrorist acts by the South Tyrolean independence movement have been documented in the 1950s and 1960s. A great degree of autonomy

4488-599: Is perceived as white light, with improved color rendering compared to wavelengths from the blue LED/YAG phosphor combination. The first white LEDs were expensive and inefficient. The light output then increased exponentially . The latest research and development has been propagated by Japanese manufacturers such as Panasonic and Nichia , and by Korean and Chinese manufacturers such as Samsung , Solstice, Kingsun, Hoyol and others. This trend in increased output has been called Haitz's law after Roland Haitz. Light output and efficiency of blue and near-ultraviolet LEDs rose and

4620-611: Is the most-visited museum in Linz. The Futurelab, housed at the Ars Electronica Center, is a center of expertise for multidisciplinary research and development of new cyberarts technologies. It is staffed by about 35 permanent team members, and offers residencies to established and emerging artists and researchers. The Futurelab has produced infrastructure and content for the Center and Festival. More recently it has engaged in art&science projects with universities and

4752-451: Is to use individual LEDs that emit three primary colors —red, green and blue—and then mix all the colors to form white light. The other is to use a phosphor material to convert monochromatic light from a blue or UV LED to broad-spectrum white light, similar to a fluorescent lamp . The yellow phosphor is cerium -doped YAG crystals suspended in the package or coated on the LED. This YAG phosphor causes white LEDs to appear yellow when off, and

4884-719: The Ausgleich , provided for a dual sovereignty, the Austrian Empire and the Kingdom of Hungary , under Franz Joseph I . The Austrian-Hungarian rule of this diverse empire included various groups, including Germans , Hungarians , Croats, Czechs, Poles , Rusyns , Serbs, Slovaks, Slovenes, and Ukrainians, as well as large Italian and Romanian communities. As a result, ruling Austria-Hungary became increasingly difficult in an age of emerging nationalist movements, requiring considerable reliance on an expanded secret police. Yet,

5016-601: The Austrofascists imposed a new constitution ("Maiverfassung") which cemented Dollfuss's power, but on 25 July he was assassinated in an Austrian Nazi coup attempt . His successor Kurt Schuschnigg acknowledged the fact that Austria was a "German state" and he also believed that Austrians were "better Germans" but he wished that Austria would remain independent. He announced a referendum on 9 March 1938, to be held on 13 March, concerning Austria's independence from Germany. On 12 March 1938, Austrian Nazis took over

5148-577: The Eastern Alps . It is a federation of nine states , one of which is the capital, Vienna , the most populous city and state. Austria is bordered by Germany to the northwest, the Czech Republic to the north, Slovakia to the northeast, Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the west. The landlocked country occupies an area of 83,879 km (32,386 sq mi) and has

5280-527: The Federal Constitutional Law of 1920, which had been terminated by dictator Dollfuss on 1 May 1934, was declared valid again. The total number of Austrian military deaths from 1939 to 1945 was 260,000. The total number of Jewish Austrian Holocaust victims was 65,000. About 140,000 Jewish Austrians had fled from the country in 1938–39. Thousands of Austrians had taken part in serious Nazi crimes (hundreds of thousands of people died in

5412-597: The Hallstatt culture by the 6th century BC . The city of Hallstatt , in fact, has the oldest archaeological evidence of the Celts in Europe. The Celtic Kingdom of Noricum that included most of modern Austria and parts of modern Slovenia was conquered by the Roman Empire in 16 BC and made a province called Noricum which lasted until the year of 476. The regions of today's Austria which were not located within

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5544-655: The Kingdom of Yugoslavia was settled with the Carinthian Plebiscite in October 1920 and allocated the major part of the territory of the former Austro-Hungarian Crownland of Carinthia to Austria. This set the border on the Karavanke mountain range, with many Slovenes remaining in Austria. After the war, inflation began to devalue the Krone, which was still Austria's currency. In the autumn of 1922, Austria

5676-832: The Mauthausen-Gusen concentration camp alone), a fact which was officially acknowledged by Chancellor Franz Vranitzky in 1992. Allied-occupied Austria was after World War II divided into military occupation zones. Austria was governed by the Allied Commission for Austria . As stipulated in the Moscow Declaration of 1943 a subtle difference was seen in the treatment of Austria by the Allies. The Austrian government, consisting of Social Democrats, Conservatives, and Communists resided in Vienna , which

5808-934: The Nobel Prize in Physics in 2014 for "the invention of efficient blue light-emitting diodes, which has enabled bright and energy-saving white light sources." In 1995, Alberto Barbieri at the Cardiff University Laboratory (GB) investigated the efficiency and reliability of high-brightness LEDs and demonstrated a "transparent contact" LED using indium tin oxide (ITO) on (AlGaInP/GaAs). In 2001 and 2002, processes for growing gallium nitride (GaN) LEDs on silicon were successfully demonstrated. In January 2012, Osram demonstrated high-power InGaN LEDs grown on silicon substrates commercially, and GaN-on-silicon LEDs are in production at Plessey Semiconductors . As of 2017, some manufacturers are using SiC as

5940-712: The Organisation for Economic Co-operation and Development (OECD) and Interpol . It also signed the Schengen Agreement in 1995, and adopted the euro currency in 1999. The native name for Austria, Österreich , derives from the Old High German Ostarrîchi , which meant "eastern realm" and which first appeared in the "Ostarrîchi document" of 996. This word is probably a translation of Medieval Latin Marchia orientalis into

6072-656: The Ostrogothic Kingdom . Following the Kingdom's fall the area was invaded by the Alemanni , Baiuvarii , Slavs , and Avars . Charlemagne , King of the Franks , conquered the area in 788, encouraged colonisation, and introduced Christianity. As part of Eastern Francia , the core areas that now encompass Austria were bequeathed to the house of Babenberg . The area was known as the marchia Orientalis and

6204-533: The Ottoman Empire , Austria-Hungary took the opportunity to annex Bosnia and Herzegovina in 1908. The assassination of Archduke Franz Ferdinand in Sarajevo in 1914 by Bosnian Serb Gavrilo Princip was used by leading Austrian politicians and generals to persuade the emperor to declare war on Serbia, thereby risking and prompting the outbreak of World War I, which eventually led to the dissolution of

6336-553: The U.S. patent office issued the two inventors the patent for the GaAs infrared light-emitting diode (U.S. Patent US3293513 ), the first practical LED. Immediately after filing the patent, Texas Instruments (TI) began a project to manufacture infrared diodes. In October 1962, TI announced the first commercial LED product (the SNX-100), which employed a pure GaAs crystal to emit an 890 nm light output. In October 1963, TI announced

6468-614: The assassination of Archduke Franz Ferdinand in 1914, Emperor Franz Joseph declared war on Serbia , which ultimately escalated into World War I . The empire's defeat and subsequent collapse led to the proclamation of the Republic of German-Austria in 1918 and the First Austrian Republic in 1919. During the interwar period , anti-parliamentarian sentiments culminated in the formation of an Austrofascist dictatorship under Engelbert Dollfuss in 1934. A year before

6600-671: The fall of the Roman Empire , the area was first invaded by the Germanic Rugii which made this region part of their " Rugiland ". In 487, most of modern Austria was conquered by Odoacer , a barbarian soldier and statesman from the Middle Danube , which incorporated most of today's Austria in his Kingdom of Italy . By 493, it was conquered by the Germanic Ostrogoths which created their own kingdom,

6732-457: The human eye as a pure ( saturated ) color. Also unlike most lasers, its radiation is not spatially coherent , so it cannot approach the very high intensity characteristic of lasers . By selection of different semiconductor materials , single-color LEDs can be made that emit light in a narrow band of wavelengths from near-infrared through the visible spectrum and into the ultraviolet range. The required operating voltages of LEDs increase as

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6864-412: The 16th century, Vienna was also serving as the Holy Roman Empire's administrative capital. Before the dissolution of the empire two years later, in 1804, Austria established its own empire , which became a great power and one of the largest states in Europe. The empire's defeat in wars and the loss of territories in the 1860s paved the way for the establishment of Austria-Hungary in 1867. After

6996-451: The 3-subpixel model for digital displays. The technology uses a gallium nitride semiconductor that emits light of different frequencies modulated by voltage changes. A prototype display achieved a resolution of 6,800 PPI or 3k x 1.5k pixels. In a light-emitting diode, the recombination of electrons and electron holes in a semiconductor produces light (be it infrared, visible or UV), a process called " electroluminescence ". The wavelength of

7128-399: The AEC is called the Sky Media Loft, which is mainly used as a coffee house or bar of the museum. It can also be rented out for meetings or events. The bar has occasionally been used as the studio for the newscast of the local TV branch of the Austrian national TV organization ORF . The specialty of the Sky Media Loft is the marvelous view over the Nibelungenbrücke and the main place of Linz at

7260-541: The Americans, planned for the supposed "Alpine Fortress Operation" of a national redoubt, that was largely to have taken place on Austrian soil in the mountains of the Eastern Alps . However, it never materialised because of the rapid collapse of the Reich. Karl Renner and Adolf Schärf (Socialist Party of Austria [Social Democrats and Revolutionary Socialists]), Leopold Kunschak (Austria's People's Party [former Christian Social People's Party]), and Johann Koplenig (Communist Party of Austria) declared Austria's secession from

7392-450: The Ars Electronica Festival. The restaurant is located on the third floor of the new building and is called CUBUS, referring to the building's cubic shape. With the new building came a new thematic orientation inside of Ars Electronica. Life sciences, global developments (e.g. climate change, population growth, environmental pollution) and the exploration of the universe are just a view of various new topics. The museum can be separated into

7524-407: The Austro-Hungarian Empire. Over one million Austro-Hungarian soldiers died in World War I. On 21 October 1918, the elected German members of the Reichsrat (parliament of Imperial Austria) met in Vienna as the Provisional National Assembly for German Austria ( Provisorische Nationalversammlung für Deutschösterreich ). On 30 October the assembly founded the Republic of German-Austria by appointing

7656-578: The German Austrians and the other ethnic groups. Many Austrians, especially those involved with the pan-German movements, desired a reinforcement of an ethnic German identity and hoped that the empire would collapse, which would allow an annexation of Austria by Germany . A lot of Austrian pan-German nationalists protested passionately against minister-president Kasimir Count Badeni 's language decree of 1897, which made German and Czech co-official languages in Bohemia and required new government officials to be fluent in both languages. This meant in practice that

7788-468: The German national colours (black, red, and yellow), although they were both temporarily banned in Austrian schools, as a way to show discontent towards the multi-ethnic empire. Austria's exclusion from Germany caused many Austrians a problem with their national identity and prompted the Social Democratic Leader Otto Bauer to state that it was "the conflict between our Austrian and German character". The Austro-Hungarian Empire caused ethnic tension between

7920-430: The Golden Nica (worth 10,000 euros), Awards of Distinction, and Honorary Mentions are made in the following categories: Note: There is also a grant scheme to honor and support ideas of exceptional promise. It is known as "[the next idea] voestalpine Art and Technology Grant". The center is housed in a modern complex of buildings by the Danube . It acts as Ars Electronica's permanent base and showcase. The majority of

8052-458: The Nazis renamed Austria the " Ostmark ", a name which it had until 1942, when it was renamed the "Alpine and Danubian Gaue" (Alpen-und Donau-Reichsgaue). Though Austrians made up only 8% of the population of the Third Reich, some of the most prominent Nazis were native Austrians, including Adolf Hitler , Ernst Kaltenbrunner , Arthur Seyss-Inquart , Franz Stangl , Alois Brunner , Friedrich Rainer , and Odilo Globocnik , as were over 13% of

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8184-420: The Social Democrats and the Conservatives, had paramilitary armies; the Social Democrats' Republikanischer Schutzbund was now declared illegal, but was still operative as the 12–15 February 1934 Austrian Civil War broke out. In February 1934, several members of the Schutzbund were executed, the Social Democratic party was outlawed, and many of its members were imprisoned or emigrated. On 1 May 1934,

8316-503: The Techno-Shaman (2008). He describes the institute's activities as "a unique platform for exploring, discussing, tracking, and analyzing the interrelation between art, technology, and society". Such work, he argues, affirms the place of the human being at the center of techno-cultural processes, as "beneficiaries, victims, and, above all, creators and appliers of new technology". Noting that the rapid pace of technological innovation has profound implications for culture and society, he presents

8448-407: The Third Reich by the Declaration of Independence on 27 April 1945 and set up a provisional government in Vienna under state Chancellor Renner the same day, with the approval of the victorious Red Army and backed by Joseph Stalin . (The date is officially named the birthday of the second republic.) At the end of April, most of western and southern Austria were still under Nazi rule. On 1 May 1945,

8580-429: The beginning, with successive defeats at the hands of Napoleon Bonaparte , meaning the end of the old Holy Roman Empire in 1806. Two years earlier, the Empire of Austria was founded. From 1792 to 1801, the Austrians had suffered 754,700 casualties. In 1814, Austria was part of the Allied forces that invaded France and brought to an end the Napoleonic Wars . It emerged from the Congress of Vienna in 1815 as one of

8712-751: The blending of the colors. Since LEDs have slightly different emission patterns, the color balance may change depending on the angle of view, even if the RGB sources are in a single package, so RGB diodes are seldom used to produce white lighting. Nonetheless, this method has many applications because of the flexibility of mixing different colors, and in principle, this mechanism also has higher quantum efficiency in producing white light. There are several types of multicolor white LEDs: di- , tri- , and tetrachromatic white LEDs. Several key factors that play among these different methods include color stability, color rendering capability, and luminous efficacy. Often, higher efficiency means lower color rendering, presenting

8844-429: The civil service would almost exclusively hire Czechs because most middle-class Czechs spoke German but not the other way around. The support of ultramontane Catholic politicians and clergy for this reform triggered the launch of the Away from Rome movement, which was initiated by supporters of Schönerer and called on "German" Christians to leave the Roman Catholic Church. As the Second Constitutional Era began in

8976-1031: The cladding and quantum well layers for ultraviolet LEDs, but these devices have not yet reached the level of efficiency and technological maturity of InGaN/GaN blue/green devices. If unalloyed GaN is used in this case to form the active quantum well layers, the device emits near-ultraviolet light with a peak wavelength centred around 365 nm. Green LEDs manufactured from the InGaN/GaN system are far more efficient and brighter than green LEDs produced with non-nitride material systems, but practical devices still exhibit efficiency too low for high-brightness applications. With AlGaN and AlGaInN , even shorter wavelengths are achievable. Near-UV emitters at wavelengths around 360–395 nm are already cheap and often encountered, for example, as black light lamp replacements for inspection of anti- counterfeiting UV watermarks in documents and bank notes, and for UV curing . Substantially more expensive, shorter-wavelength diodes are commercially available for wavelengths down to 240 nm. As

9108-421: The continent's four dominant powers and a recognised great power . The same year, the German Confederation ( Deutscher Bund ) was founded under the presidency of Austria. Because of unsolved social, political, and national conflicts, the German lands were shaken by the 1848 revolutions aiming to create a unified Germany. The various different possibilities for a united Germany were: a Greater Germany , or

9240-417: The cost of reliable devices fell. This led to relatively high-power white-light LEDs for illumination, which are replacing incandescent and fluorescent lighting. Experimental white LEDs were demonstrated in 2014 to produce 303 lumens per watt of electricity (lm/W); some can last up to 100,000 hours. Commercially available LEDs have an efficiency of up to 223 lm/W as of 2018. A previous record of 135 lm/W

9372-408: The duchies of Schleswig and Holstein . As they could not agree on how the two duchies should be administered, though, they fought the Austro-Prussian War in 1866. Defeated by Prussia in the Battle of Königgrätz , Austria had to leave the German Confederation and no longer took part in German politics. After the defeated Hungarian Revolution of 1848 , the Austro-Hungarian Compromise of 1867 ,

9504-567: The election was officially 99.5%, with 98.9% voting "yes". In the case of Austria, Adolf Hitler's native soil, 99.71% of an electorate of 4,484,475 officially went to the ballots, with a positive tally of 99.73 percent. Although most Austrians favored the Anschluss , in certain parts of Austria, the German soldiers were not always welcomed with flowers and joy, especially in Vienna, which had Austria's largest Jewish population. Nevertheless, despite

9636-543: The emitted wavelengths become shorter (higher energy, red to blue), because of their increasing semiconductor band gap. Blue LEDs have an active region consisting of one or more InGaN quantum wells sandwiched between thicker layers of GaN, called cladding layers. By varying the relative In/Ga fraction in the InGaN quantum wells, the light emission can in theory be varied from violet to amber. Aluminium gallium nitride (AlGaN) of varying Al/Ga fraction can be used to manufacture

9768-624: The empire made in the previous years. He enjoyed the imminent extinction of the House of Habsburg . Charles VI was willing to offer concrete advantages in territory and authority in exchange for recognition of the Pragmatic Sanction of 1713 . Therefore, his daughter Maria Theresa was recognized as his heir. With the rise of Prussia , the Austria–Prussia rivalry began in Germany. Austria participated, together with Prussia and Russia, in

9900-521: The examples exhibited at the 2014 festival were: A version called "Smart atoms: spaxels version" was developed by Ars Electronica Futurelab and shown at the 2014 festival. The Prix Ars Electronica is an annual award made in several categories, "honoring creativity and innovativeness in the use of digital media". Award winners are selected by a five-person international expert jury, who may themselves propose candidates. The prize may be awarded to individuals or to teams or organizations, and may be awarded for

10032-442: The extraction of natural resources. Those global developments are connected with possible local reactions, which is visualized in an interactive city information system called Sim-Linz. This is the area for temporary exhibitions on the first and second floor of the original building and focuses on the interdisciplinary aspects of Ars Electronica and its contributors. The Deep Space is a multifunctional presentation room that offers

10164-496: The field of luminescence with research on radium . Hungarian Zoltán Bay together with György Szigeti patenting a lighting device in Hungary in 1939 based on silicon carbide, with an option on boron carbide, that emitted white, yellowish white, or greenish white depending on impurities present. Kurt Lehovec , Carl Accardo, and Edward Jamgochian explained these first LEDs in 1951 using an apparatus employing SiC crystals with

10296-496: The first Austrian Republic . Over three million German-speaking Austrians found themselves living outside the new Austrian Republic as minorities in the newly formed or enlarged states of Czechoslovakia , Yugoslavia , Hungary , and Italy. These included the provinces of South Tyrol , and German Bohemia . The status of German Bohemia and Sudetenland later played a role in World War II. The border between Austria and

10428-399: The first and the third of the three Partitions of Poland in 1772 and 1795 respectively. From that time, Austria became the birthplace of classical music and played host to different composers including Joseph Haydn , Wolfgang Amadeus Mozart , Ludwig van Beethoven , and Franz Schubert . Austria later became engaged in a war with Revolutionary France , which was highly unsuccessful in

10560-612: The first commercial hemispherical LED, the SNX-110. In the 1960s, several laboratories focused on LEDs that would emit visible light. A particularly important device was demonstrated by Nick Holonyak on October 9, 1962, while he was working for General Electric in Syracuse, New York . The device used the semiconducting alloy gallium phosphide arsenide (GaAsP). It was the first semiconductor laser to emit visible light, albeit at low temperatures. At room temperature it still functioned as

10692-521: The first commercially available blue LED, based on the indirect bandgap semiconductor, silicon carbide (SiC). SiC LEDs had very low efficiency, no more than about 0.03%, but did emit in the blue portion of the visible light spectrum. In the late 1980s, key breakthroughs in GaN epitaxial growth and p-type doping ushered in the modern era of GaN-based optoelectronic devices. Building upon this foundation, Theodore Moustakas at Boston University patented

10824-721: The first high-brightness, high-efficiency LEDs for optical fiber telecommunications by inventing new semiconductor materials specifically adapted to optical fiber transmission wavelengths. Until 1968, visible and infrared LEDs were extremely costly, on the order of US$ 200 per unit, and so had little practical use. The first commercial visible-wavelength LEDs used GaAsP semiconductors and were commonly used as replacements for incandescent and neon indicator lamps , and in seven-segment displays , first in expensive equipment such as laboratory and electronics test equipment, then later in such appliances as calculators, TVs, radios, telephones, as well as watches. The Hewlett-Packard company (HP)

10956-545: The following areas: The Main Gallery with approximately 1000 square meters houses the main exhibition called New Views of Humankind, which focuses on topics like biotechnology, robotics, rapid prototyping and the human body. It is separated into the following four so-called "labs": Main Gallery contains a special area for children which is not thematically connected to the main exhibition. Geo City focuses on global developments caused by humankind, like growth in population and

11088-516: The government of Austria tried its best to be accommodating in some respects: for example, the Reichsgesetzblatt , publishing the laws and ordinances of Cisleithania , was issued in eight languages; and all national groups were entitled to schools in their own language and to the use of their mother tongue at state offices. Many Austrians of all different social circles such as Georg Ritter von Schönerer promoted strong pan-Germanism in

11220-502: The government, while German troops occupied the country, which prevented Schuschnigg's referendum from taking place. On 13 March 1938, the Anschluss ( lit.   ' joining ' or ' connection ' ) of Austria was officially declared. Two days later, Austrian-born Adolf Hitler announced what he called the "reunification" of his home country with the "rest of the German Reich " on Vienna's Heldenplatz . He established

11352-825: The heiress Maria of Burgundy , thus acquiring most of the Netherlands for the family. In 1496, his son Philip the Fair married Joanna the Mad , the heiress of Castile and Aragon , thus acquiring Spain and its Italian, African, Asian , and New World appendages for the Habsburgs. In 1526, following the Battle of Mohács , Bohemia and the part of Hungary not occupied by the Ottomans came under Austrian rule. Ottoman expansion into Hungary led to frequent conflicts between

11484-540: The hope of reinforcing an ethnic German identity and the annexation of Austria to Germany. Some Austrians such as Karl Lueger also used pan-Germanism as a form of populism to further their own political goals. Although Bismarck's policies excluded Austria and the German Austrians from Germany, many Austrian pan-Germans idolised him and wore blue cornflowers, known to be the favourite flower of German Emperor William I , in their buttonholes, along with cockades in

11616-407: The important GaN deposition on sapphire substrates and the demonstration of p-type doping of GaN. This new development revolutionized LED lighting, making high-power blue light sources practical, leading to the development of technologies like Blu-ray . Nakamura was awarded the 2006 Millennium Technology Prize for his invention. Nakamura, Hiroshi Amano , and Isamu Akasaki were awarded

11748-514: The landscape if the visitor raises the head or looks down. The entrance or the so-called "Login Gateway" of the museum is on the ground floor and leads the newcomer directly to the Telegarden , where a robot is looking after a flower patch. Every ticket is provided with a bar code that gives information about the time the visitor entered the museum. After the visit, the ticket can be put into

11880-417: The light depends on the energy band gap of the semiconductors used. Since these materials have a high index of refraction, design features of the devices such as special optical coatings and die shape are required to efficiently emit light. Unlike a laser , the light emitted from an LED is neither spectrally coherent nor even highly monochromatic . Its spectrum is sufficiently narrow that it appears to

12012-420: The light produced is engineered to suit the human eye. Because of metamerism , it is possible to have quite different spectra that appear white. The appearance of objects illuminated by that light may vary as the spectrum varies. This is the issue of color rendition, quite separate from color temperature. An orange or cyan object could appear with the wrong color and much darker as the LED or phosphor does not emit

12144-570: The long reign of Leopold I, Holy Roman Emperor following the successful defence of Vienna against the Turks in 1683, under the command of the King of Poland John III Sobieski , the Great Turkish War resulted in most of Hungary being controlled by Austria. This arrangement was formalized in the Treaty of Karlowitz in 1699. Charles VI, Holy Roman Emperor relinquished many of the gains

12276-556: The members of the SS and 40% of the staff at the Nazi extermination camps . In the Reichsgau , besides the main camp KZ-Mauthausen , there were numerous sub-camps in all provinces where Jews and other prisoners were killed, tortured and exploited. At this time, because the territory was outside the operational radius of Allied aircraft, the armaments industry was greatly expanded through the forced labor of concentration camp prisoners, this

12408-557: The original building, a new "twin-tower", the main exhibition hall called Main Gallery and the new space for the Ars Electronica Futurelab. The whole building is covered with a 5000-square-meter glass skin that consists of 1100 glass panels. Each panel is equipped with an LED bar that allows it to change its color. Therefore, the whole building acts as a giant display. Artists can create their own visualizations which will be shown on various occasions, especially during

12540-522: The other side of the Danube which functions as background of the newscasts. The second floor is where people can interact with exhibits. There are Musicbottles containing different types of music or Pingpongplus which is a table tennis game on a desk with virtual water on its surface. The first floor has displays about the world that had been hidden from our eyes. In the "Hidden Worlds" various machines are translating voice and words into virtual symbols or colors, and everyday life articles can be moved on

12672-428: The outbreak of World War II , Austria was annexed into Nazi Germany by Adolf Hitler , and it became a sub-national division . After its liberation in 1945 and a decade of Allied occupation , the country regained its sovereignty and declared its perpetual neutrality in 1955. Austria is a federal parliamentary republic and representative democracy with a popularly elected president as head of state and

12804-448: The phosphors, the Ce:YAG phosphor converts blue light to green and red (yellow) light, and the PFS phosphor converts blue light to red light. The color, emission spectrum or color temperature of white phosphor converted and other phosphor converted LEDs can be controlled by changing the concentration of several phosphors that form a phosphor blend used in an LED package. The 'whiteness' of

12936-599: The photosensitivity of microorganisms approximately matches the absorption spectrum of DNA , with a peak at about 260 nm, UV LED emitting at 250–270 nm are expected in prospective disinfection and sterilization devices. Recent research has shown that commercially available UVA LEDs (365 nm) are already effective disinfection and sterilization devices. UV-C wavelengths were obtained in laboratories using aluminium nitride (210 nm), boron nitride (215 nm) and diamond (235 nm). There are two primary ways of producing white light-emitting diodes. One

13068-469: The private sector. The spaxels ("space pixels") have been shown publicly as a world premiere in 2012 by Ars Electronica Futurelab. Spaxels are the single elements that form a drone display . Automatically controlled drones fitted with LEDs (= spaxels), fly in formation to create apparent three-dimensional objects against the night sky. Spaxel ref. Wiktionary Trent Nathaniel Grover has included an appendix about Ars Electronica in his book Dream of

13200-503: The propaganda and the manipulation and rigging which surrounded the ballot box result, there was massive genuine support for Hitler for fulfilling the Anschluss , since many Germans from both Austria and Germany saw it as completing the long overdue unification of all Germans into one state. On 13 March 1938, Austria was annexed by the Third Reich and ceased to exist as an independent country (the Anschluss ). The Aryanisation of

13332-545: The province of Noricum were divided between the Roman provinces of Pannonia , which encompassed parts of eastern Austria, and Raetia , which encompassed the areas of present-day Vorarlberg and Tyrol . Present-day Petronell- Carnuntum in eastern Austria was an important army camp turned capital city in what became known as the Pannonia Superior . Carnuntum was home to 50,000 people for nearly 400 years. After

13464-552: The published work of Ars Electronica as "a compelling snapshot of codependent technological and artistic development with expansive and lasting social and cultural impact." Austria – in Europe  (green & dark grey) – in the European Union  (green)  –  [ Legend ] Austria , formally the Republic of Austria , is a landlocked country in Central Europe , lying in

13596-529: The role of Ars Electronica as working to integrate developments in technology with art and society to the benefit of all, and contrasts this perspective with the Modernist call for "art for art's sake". Grover concludes by hoping that Ars Electronica "will be able to maintain its ongoing quest for innovation and expansion so that we can all benefit from and further involve ourselves in the integration of art, technology, and society". Grover (2008) has described

13728-421: The rudimentary devices could be used for non-radio communication across a short distance. As noted by Kroemer Braunstein "…had set up a simple optical communications link: Music emerging from a record player was used via suitable electronics to modulate the forward current of a GaAs diode. The emitted light was detected by a PbS diode some distance away. This signal was fed into an audio amplifier and played back by

13860-419: The same day it drafted a provisional constitution that stated that "German-Austria is a democratic republic" (Article 1) and "German-Austria is an integral part of the German reich" (Article 2). The Treaty of Saint Germain and the Treaty of Versailles explicitly forbade union between Austria and Germany. The treaties also forced German-Austria to rename itself as "Republic of Austria" which consequently led to

13992-480: The same time. Some LEDs use phosphors made of glass-ceramic or composite phosphor/glass materials. Alternatively, the LED chips themselves can be coated with a thin coating of phosphor-containing material, called a conformal coating. The temperature of the phosphor during operation and how it is applied limits the size of an LED die. Wafer-level packaged white LEDs allow for extremely small LEDs. In 2024, QPixel introduced as polychromatic LED that could replace

14124-408: The space between the crystals allow some blue light to pass through in LEDs with partial phosphor conversion. Alternatively, white LEDs may use other phosphors like manganese(IV)-doped potassium fluorosilicate (PFS) or other engineered phosphors. PFS assists in red light generation, and is used in conjunction with conventional Ce:YAG phosphor. In LEDs with PFS phosphor, some blue light passes through

14256-426: The space is used for public exhibitions and events, with an emphasis on interactivity and participation. Major themes are life sciences, environmental issues, and preparation for impending technological developments with likely impacts on society. There is also provision for conferences, workshops, and R&D. The center was enhanced and expanded in 2009, coincident with Linz's term as European Capital of Culture . It

14388-547: The subsequent device Pankove and Miller built, the first actual gallium nitride light-emitting diode, emitted green light. In 1974 the U.S. Patent Office awarded Maruska, Rhines, and Stanford professor David Stevenson a patent for their work in 1972 (U.S. Patent US3819974 A ). Today, magnesium-doping of gallium nitride remains the basis for all commercial blue LEDs and laser diodes . In the early 1970s, these devices were too dim for practical use, and research into gallium nitride devices slowed. In August 1989, Cree introduced

14520-480: The substrate for LED production, but sapphire is more common, as it has the most similar properties to that of gallium nitride, reducing the need for patterning the sapphire wafer (patterned wafers are known as epi wafers). Samsung , the University of Cambridge , and Toshiba are performing research into GaN on Si LEDs. Toshiba has stopped research, possibly due to low yields. Some opt for epitaxy , which

14652-569: The team at Fairchild led by optoelectronics pioneer Thomas Brandt to achieve the needed cost reductions. LED producers have continued to use these methods as of about 2009. The early red LEDs were bright enough for use as indicators, as the light output was not enough to illuminate an area. Readouts in calculators were so small that plastic lenses were built over each digit to make them legible. Later, other colors became widely available and appeared in appliances and equipment. Early LEDs were packaged in metal cases similar to those of transistors, with

14784-535: The two empires, particularly evident in the Long War of 1593 to 1606. The Turks made incursions into Styria nearly 20 times, of which some are cited as "burning, pillaging, and taking thousands of slaves". In late September 1529, Suleiman the Magnificent launched the first siege of Vienna , which unsuccessfully ended, according to Ottoman historians, with the snowfalls of an early beginning winter. During

14916-461: The very inefficient light-producing properties of silicon carbide, the semiconductor Losev used. In 1936, Georges Destriau observed that electroluminescence could be produced when zinc sulphide (ZnS) powder is suspended in an insulator and an alternating electrical field is applied to it. In his publications, Destriau often referred to luminescence as Losev-Light. Destriau worked in the laboratories of Madame Marie Curie , also an early pioneer in

15048-563: The vicinity of the Duchy of Austria. In 1438, Duke Albert V of Austria was chosen as the successor to his father-in-law, Emperor Sigismund . Although Albert himself only reigned for a year, henceforth every emperor of the Holy Roman Empire was a Habsburg, with only one exception. The Habsburgs began also to accumulate territory far from the hereditary lands. In 1477, Archduke Maximilian , only son of Emperor Frederick III , married

15180-538: The wavelength it reflects. The best color rendition LEDs use a mix of phosphors, resulting in less efficiency and better color rendering. The first white light-emitting diodes (LEDs) were offered for sale in the autumn of 1996. Nichia made some of the first white LEDs which were based on blue LEDs with Ce:YAG phosphor. Ce:YAG is often grown using the Czochralski method . Mixing red, green, and blue sources to produce white light needs electronic circuits to control

15312-736: The wealth of Jewish Austrians started immediately in mid-March, with a so-called "wild" (i.e. extra-legal) phase, but it was soon structured legally and bureaucratically so the assets which Jewish citizens possessed could be stripped from them. At that time, Adolf Eichmann , who grew up in Austria, was transferred to Vienna and ordered to persecute the Jews. During the November pogrom in 1938 ("Reichskristallnacht"), Jews and Jewish institutions such as synagogues were subjected to violent attacks in Vienna, Klagenfurt, Linz, Graz, Salzburg, Innsbruck and several cities in Lower Austria. Otto von Habsburg ,

15444-420: Was able to send the Allies information about armaments factories where V-1 flying bombs , V-2 rockets , Tiger tanks , and aircraft ( Messerschmitt Bf 109 , Messerschmitt Me 163 Komet , etc.) were manufactured, information which was important to the success of Operation Crossbow and Operation Hydra , both of which were preliminary missions before the launch of Operation Overlord . This resistance group, which

15576-618: Was achieved by Nichia in 2010. Compared to incandescent bulbs, this is a huge increase in electrical efficiency, and even though LEDs are more expensive to purchase, overall lifetime cost is significantly cheaper than that of incandescent bulbs. The LED chip is encapsulated inside a small, plastic, white mold although sometimes an LED package can incorporate a reflector. It can be encapsulated using resin ( polyurethane -based), silicone, or epoxy containing (powdered) Cerium-doped YAG phosphor particles. The viscosity of phosphor-silicon mixtures must be carefully controlled. After application of

15708-415: Was engaged in research and development (R&D) on practical LEDs between 1962 and 1968, by a research team under Howard C. Borden, Gerald P. Pighini at HP Associates and HP Labs . During this time HP collaborated with Monsanto Company on developing the first usable LED products. The first usable LED products were HP's LED display and Monsanto's LED indicator lamp , both launched in 1968. Monsanto

15840-580: Was especially the case with regard to the manufacture of fighter planes, tanks and missiles. Most of the resistance groups were soon crushed by the Gestapo . While the plans of the group around Karl Burian to blow up the Gestapo's headquarters in Vienna were uncovered, the important group around the later executed priest Heinrich Maier managed to contact the Allies . This so-called Maier-Messner group

15972-613: Was given to Leopold of Babenberg in 976. The first record showing the name Austria is from 996, where it is written as Ostarrîchi , referring to the territory of the Babenberg March. In 1156, the Privilegium Minus elevated Austria to the status of a duchy. In 1192, the Babenbergs also acquired the Duchy of Styria . With the death of Frederick II in 1246, the line of the Babenbergs was extinguished. As

16104-572: Was granted an international loan supervised by the League of Nations . The purpose of the loan was to avert bankruptcy, stabilise the currency, and improve Austria's general economic condition. The loan meant that Austria passed from an independent state to the control exercised by the League of Nations. In 1925, the Austrian schilling was introduced, replacing the Krone at a rate of 10,000:1. Later, it

16236-1256: Was granted to Tyrol by the Italian national government. LED Appearing as practical electronic components in 1962, the earliest LEDs emitted low-intensity infrared (IR) light. Infrared LEDs are used in remote-control circuits, such as those used with a wide variety of consumer electronics. The first visible-light LEDs were of low intensity and limited to red. Early LEDs were often used as indicator lamps, replacing small incandescent bulbs , and in seven-segment displays . Later developments produced LEDs available in visible , ultraviolet (UV), and infrared wavelengths with high, low, or intermediate light output, for instance, white LEDs suitable for room and outdoor lighting. LEDs have also given rise to new types of displays and sensors, while their high switching rates are useful in advanced communications technology with applications as diverse as aviation lighting , fairy lights , strip lights , automotive headlamps , advertising, general lighting , traffic signals , camera flashes, lighted wallpaper , horticultural grow lights , and medical devices. LEDs have many advantages over incandescent light sources, including lower power consumption,

16368-619: Was in contact with the American secret service ( OSS ), soon provided information about mass executions and concentration camps such as Auschwitz . The group's aim was to cause Nazi Germany to lose the war as quickly as possible and re-establish an independent Austria. Vienna fell on 13 April 1945, during the Soviet Vienna offensive , just before the total collapse of the Third Reich. The invading Allied powers, in particular

16500-533: Was incorporated as a limited company in 1995. The Ars Electronica Center, together with the Futurelab, opened in 1996, and was remodeled in 2009. Funding is provided by the City of Linz, the Province of Upper Austria and the Republic of Austria , in addition to private partners. Since 2014, the organization has been headed by artistic director Gerfried Stocker and financial director Diethard Schwarzmair. The top of

16632-433: Was made at Stanford University in 1972 by Herb Maruska and Wally Rhines , doctoral students in materials science and engineering. At the time Maruska was on leave from RCA Laboratories , where he collaborated with Jacques Pankove on related work. In 1971, the year after Maruska left for Stanford, his RCA colleagues Pankove and Ed Miller demonstrated the first blue electroluminescence from zinc-doped gallium nitride, though

16764-401: Was nicknamed the "Alpine dollar" due to its stability. From 1925 to 1929 the economy enjoyed a short high before nearly crashing after Black Tuesday . The First Austrian Republic lasted until 1933, when Chancellor Engelbert Dollfuss , using what he called "self-switch-off of Parliament" , established an autocratic regime tending towards Italian fascism . The two big parties at this time,

16896-443: Was quickly followed by the development of the first white LED . In this device a Y 3 Al 5 O 12 :Ce (known as " YAG " or Ce:YAG phosphor) cerium -doped phosphor coating produces yellow light through fluorescence . The combination of that yellow with remaining blue light appears white to the eye. Using different phosphors produces green and red light through fluorescence. The resulting mixture of red, green and blue

17028-596: Was responsible for directing the nationalized industries under the directorship of Minister Peter Krauland (party ÖVP). On 15 May 1955, after talks which lasted for years and were influenced by the Cold War Austria regained full independence by concluding the Austrian State Treaty with the allies of World War II. On 26 October 1955, all occupation troops had left and Austria declared its permanent neutrality by an act of parliament. This day

17160-546: Was surrounded by the Soviet zone. This Austrian government was recognised by the allies of World War II in October 1945 despite concerns that Karl Renner could be Stalin's puppet. On 26 July 1946 the Austrian Parliament passed its first nationalization law and approximately 70 mining and manufacturing companies were seized by the Austrian state. The Ministry of Property Protection and Economic Planning ( Ministerium für Vermögenssicherung und Wirtschaftsplanung )

17292-571: Was the first intelligent LED display, and was a revolution in digital display technology, replacing the Nixie tube and becoming the basis for later LED displays. In the 1970s, commercially successful LED devices at less than five cents each were produced by Fairchild Optoelectronics. These devices employed compound semiconductor chips fabricated with the planar process (developed by Jean Hoerni , ). The combination of planar processing for chip fabrication and innovative packaging methods enabled

17424-484: Was the first organization to mass-produce visible LEDs, using Gallium arsenide phosphide (GaAsP) in 1968 to produce red LEDs suitable for indicators. Monsanto had previously offered to supply HP with GaAsP, but HP decided to grow its own GaAsP. In February 1969, Hewlett-Packard introduced the HP Model 5082-7000 Numeric Indicator, the first LED device to use integrated circuit (integrated LED circuit ) technology. It

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