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104-455: In earlier Polaroid instant cameras the film is pulled through rollers, breaking open a pod containing a reagent that is spread between the exposed negative and receiving positive sheet . This film sandwich develops for some time after which the positive sheet is peeled away from the negative to reveal the developed photo. In 1972, Polaroid introduced integral film , which incorporated timing and receiving layers to automatically develop and fix

208-405: A cosmetic to redden cheeks and lips and also used henna to color their hair and paint their nails. The ancient Romans wore togas with red stripes on holidays, and the bride at a wedding wore a red shawl, called a flammeum . Red was used to color statues and the skin of gladiators. Red was also the color associated with army; Roman soldiers wore red tunics, and officers wore a cloak called

312-549: A paludamentum which, depending upon the quality of the dye, could be crimson, scarlet or purple. In Roman mythology red is associated with the god of war, Mars . The vexilloid of the Roman Empire had a red background with the letters SPQR in gold . A Roman general receiving a triumph had his entire body painted red in honor of his achievement. The Romans liked bright colors, and many Roman villas were decorated with vivid red murals. The pigment used for many of

416-488: A battle meant that no prisoners would be taken. In 1793-94, red became the color of the French Revolution . A red Phrygian cap , or "liberty cap", was part of the uniform of the sans-culottes , the most militant faction of the revolutionaries. In the late 18th century, during a strike English dock workers carried red flags, and it thereafter became closely associated with the new labour movement, and later with

520-537: A black and white 4x5 positive-negative material that is exposed and processed in a Polaroid 545 holder. New55 PN provided a positive print and a 4x5 negative that could be scanned, contact printed, or enlarged. Winding up their proof-of-principle R&D phase, New55 Holdings, LLC, ceased operations in December 2017, but under a new structure restarted production of New55 100 and 400 speed instant 4X5 film sold through Famous-Format's online store . The liquid chemicals for

624-470: A chemical ingredient (a compound or mixture, typically of inorganic or small organic molecules) introduced to cause the desired transformation of an organic substance. Examples include the Collins reagent , Fenton's reagent , and Grignard reagents . In analytical chemistry , a reagent is a compound or mixture used to detect the presence or absence of another substance, e.g. by a color change, or to measure

728-476: A computer screen is made by a similar formula to that used by Cennino Cennini in the Renaissance to make violet, but using additive colors and light instead of pigment: it is created by combining red and blue light at equal intensity on a black screen. Violet is made on a computer screen in a similar way, but with a greater amount of blue light and less red light. As a ray of white sunlight travels through

832-479: A developing strip by a hand-cranked machine called the AutoProcessor. The AutoProcessor was very cheap and did not require a darkroom; the results were somewhat variable, the resolution was not as good as conventional film due to the matrix of tiny red, green and blue filters required to make the monochrome emulsion work in color, and the sensitivity was low, even for slide film; in tungsten light, Polachrome CS

936-527: A fading stimulation of the L (long-wavelength) cone cells. Primates can distinguish the full range of the colors of the spectrum visible to humans, but many kinds of mammals, such as dogs and cattle, have dichromacy , which means they can see blues and yellows, but cannot distinguish red and green (both are seen as gray). Bulls, for instance, cannot see the red color of the cape of a bullfighter, but they are agitated by its movement. (See color vision ). One theory for why primates developed sensitivity to red

1040-593: A film developer, carbon, a thickener, antifoggant and sulfite, two timing layers, an acid polymer, a clear polyester layer and a backing layer facing the expose side of the film. The reagent is highly alkaline and when spread across the top of the stack, it solubilizes or dissolves and moves the chemicals in the stack, which starts the photographic developing process. The silver halide that is exposed to light undergoes redox reactions with developer, and leaves free, undeveloped silver halide with silver ions that can modify image-forming dyes. The solubility and thus diffusivity of

1144-429: A given biomolecule —for example a drug target —but are unlikely to be useful as drugs themselves, and are often starting points in the drug discovery process. However, many natural substances are hits in almost any assay in which they are tested, and therefore not useful as tool compounds. Medicinal chemists class them instead as pan-assay interference compounds . One example is curcumin . Red Red

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1248-470: A mystical light. Soon stained glass windows were being added to cathedrals all across France, England and Germany. In medieval painting red was used to attract attention to the most important figures; both Christ and the Virgin Mary were commonly painted wearing red mantles. In western countries red is a symbol of martyrs and sacrifice, particularly because of its association with blood. Beginning in

1352-492: A new product with new characteristics, consisting of new optimised components, produced with a streamlined modern setup. An innovative and fresh analog material, sold under a new brand name that perfectly will match the global re-positioning of Integral Films." On March 22, 2010, it was announced they were successful in manufacturing instant film compatible with Polaroid SX-70/600 instant cameras. Two new products were announced — PX100 and PX600. Their PX100 Silver Shade instant film

1456-422: A set of rollers which spread a reagent between the two layers, creating a developing film "sandwich". The negative develops quickly, after which some of the unexposed silver halide grains (and the latent image it contains) are solubilized by the reagent and transferred by diffusion from the negative to the positive. After a minute, depending on film type and ambient temperature, the negative is peeled away to reveal

1560-399: A silver-ion catalyzed process for dye release for the magenta and yellow dye layers. Instant films with different view and expose sides had, as seen from the view side, from the front towards the back of the film, in layers: A backing layer, a clear polyester layer, a mordant to receive the image in the film, a titanium white light reflecting layer, a carbon black opaque layer, a releaser for

1664-410: A specific camera and tabletop viewer, and was not a commercial success, but did lead to the development of an instant 35 mm color slide film . Polachrome was an easy to develop 35 mm film, available in color, monochrome and 'blue' formats (the latter intended for making title cards). Each roll of film came with a cartridge containing developing chemicals which were pressed between the film and

1768-415: A specific detachable back. Color film is much more complex due to multiple layers of emulsion and dye. The negative consists of three emulsion layers sensitive to the primary colors ( red , green , and blue ) each with a layer of developing dye beneath it of the complementary color ( cyan , magenta , and yellow ). Once light exposed the negative, the reagent is spread between the negative and positive and

1872-402: A subject or setup looks before using conventional film for the final exposure. Instant film is also used by artists to achieve effects that are impossible to accomplish with traditional photography, by manipulating the emulsion during the developing process, or separating the image emulsion from the film base. Instant film has been supplanted for most purposes by digital photography , which allows

1976-420: A substance consumed in the course of a chemical reaction. Solvents , though involved in the reaction mechanism , are usually not called reactants. Similarly, catalysts are not consumed by the reaction, so they are not reactants. In biochemistry , especially in connection with enzyme -catalyzed reactions, the reactants are commonly called substrates . In organic chemistry , the term "reagent" denotes

2080-438: A thickener, which would be spread on top of a stack of (from top to bottom) cyan dye developer, red-sensitive silver halide emulsion, an interlayer, magenta dye developer, green-sensitive silver halide emulsion, an interlayer, a yellow dye developer, a blue-sensitive silver halide emulsion, and an anti-abrasive layer. This stack would be on top of an opaque polyester back. Above the reagent would be an image-receiving mordant layer,

2184-426: A timing layer, an acid layer and a clear polyester layer. The pigment would be white titania in a suspension, and the opacifying dyes would be opaque at high pH levels but mostly transparent at low pH levels. The developers would contain metals such as copper for cyan, and chromium for magenta and yellow. These would form metal-containing dyes, with better lightfastness. Eventually this type of film from Polaroid received

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2288-403: A very visible symbol of his authority, and wore red shoes at his coronation. Kings, princes and, beginning in 1295, Roman Catholic cardinals began to wear red colored habitus . When Abbe Suger rebuilt Saint Denis Basilica outside Paris in the early 12th century, he added stained glass windows colored blue cobalt glass and red glass tinted with copper. Together they flooded the basilica with

2392-464: A wavelength between approximately 625 and 740 nanometers . It is a primary color in the RGB color model and the light just past this range is called infrared, or below red, and cannot be seen by human eyes, although it can be sensed as heat. In the language of optics, red is the color evoked by light that stimulates neither the S or the M (short and medium wavelength) cone cells of the retina, combined with

2496-489: A wide format compared to the square Polaroid SX-70/600 films. These Integral films developed similar to Kodak's with the back layer first. This presented a major problem for Fujifilm because of the ongoing litigation between Kodak and Polaroid. Polaroid also has a separate suit with Fujifilm and their instant film patents in Japan. When Kodak lost, Fujifilm was able to work with Polaroid to allow their cameras and films to remain in

2600-564: Is a manipulable, monochromatic replacement of old Polaroid brand instant film compatible with SX-70 cameras while the PX600 Silver Shade instant film is compatible with 600 cameras. That formulation has since been supplanted by improved films. The company, renamed Polaroid Originals in 2017, produces 600, SX-70, Spectra and 8×10 color and monochrome film packs with a variety of colored borders. It also produces I-Type film packs that differ from traditional 600 packs in their omission of

2704-695: Is banned in Denmark, Belgium, France and Switzerland, and was also banned in Sweden until the country joined the European Union in 1994. The European Union approves Allura Red AC as a food colorant, but EU countries' local laws banning food colorants are preserved. In the United States, Allura Red AC is approved by the Food and Drug Administration (FDA) for use in cosmetics , drugs , and food. It

2808-490: Is not helpful unless RH can be controlled and cold storage RH is generally drier than required. RH below 30% will create an environment that is too dry and may cause the photograph to curl. A Polaroid transfer removes the emulsion from the plastic backing and residual chemicals, offering an alternate form of preservation. In February 2008, Polaroid (by then under the control of Thomas J. Petters of Petters Group Worldwide ) announced it would cease production of all instant film;

2912-434: Is one of the three primary colors , along with blue and yellow. Painters in the Renaissance mixed red and blue to make violet: Cennino Cennini , in his 15th-century manual on painting, wrote, "If you want to make a lovely violet colour, take fine lac ( red lake ), ultramarine blue (the same amount of the one as of the other) with a binder"; he noted that it could also be made by mixing blue indigo and red hematite . In

3016-671: Is rated at ISO 40. It was introduced in 1983. Polaroid integral film packs usually contain a flat "Polapulse" electrical battery, which powers systems in the camera, including exposure and focusing mechanisms, electronic flash, and a film ejection motor. The inclusion of the battery within the film pack ensures that a fresh battery is available with each new pack of film. Polaroids have the same storage standards under ISO 18920:2000 as any other photograph. Regular storage conditions should be less than 70 degrees Fahrenheit (21 degrees Celsius) and between 50% and 30% relative humidity (RH). Cold storage (0 degrees Fahrenheit / -17 degrees Celsius optimum)

3120-459: Is similar to subtractive color instant film with added timing and receiving layers. Land's solution was to incorporate an opacifier, which would darken when ejected from the camera, and then become clear to reveal the photograph. The film itself integrates all the layers to expose, develop, and fix the photo into a plastic envelope and frame commonly associated with a Polaroid photo. There are two kinds of integral instant photographic film: one where

3224-403: Is smaller as it is surrounded by a border). Early instant film was distributed on rolls, but later and current films are supplied in packs of 8 or 10 sheets, and single sheet films for use in large format cameras with a compatible back . Though the quality of integral instant film is not as high as conventional film, peel apart black and white film (and to a lesser extent color film) approached

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3328-491: Is that it allowed ripe fruit to be distinguished from unripe fruit and inedible vegetation. This may have driven further adaptations by species taking advantage of this new ability, such as the emergence of red faces. Red light is used to help adapt night vision in low-light or night time, as the rod cells in the human eye are not sensitive to red. In the RYB color model , which is the basis of traditional color theory , red

3432-532: Is the color at the long wavelength end of the visible spectrum of light, next to orange and opposite violet . It has a dominant wavelength of approximately 625–740 nanometres . It is a primary color in the RGB color model and a secondary color (made from magenta and yellow ) in the CMYK color model , and is the complementary color of cyan . Reds range from the brilliant yellow-tinged scarlet and vermillion to bluish-red crimson , and vary in shade from

3536-709: Is the color most associated with courage. In western countries red is a symbol of martyrs and sacrifice, particularly because of its association with blood. Beginning in the Middle Ages, the Pope and Cardinals of the Roman Catholic Church wore red to symbolize the blood of Christ and the Christian martyrs. The banner of the Christian soldiers in the First Crusade was a red cross on a white field,

3640-478: Is the color symbolizing happiness and good fortune. Varieties of the color red may differ in hue , chroma (also called saturation, intensity, or colorfulness), or lightness (or value, tone, or brightness ), or in two or three of these qualities. Variations in value are also called tints and shades , a tint being a red or other hue mixed with white, a shade being mixed with black. Four examples are shown below. The human eye sees red when it looks at light with

3744-580: Is used in some tattoo inks and is used in many products, such as soft drinks , children's medications, and cotton candy . On June 30, 2010, the Center for Science in the Public Interest (CSPI) called for the FDA to ban Red 40. Because of public concerns about possible health risks associated with synthetic dyes, many companies have switched to using natural pigments such as carmine , made from crushing

3848-507: The American Chemical Society . For instance, reagent-quality water must have very low levels of impurities such as sodium and chloride ions, silica , and bacteria, as well as a very high electrical resistivity . Laboratory products which are less pure, but still useful and economical for undemanding work, may be designated as technical , practical , or crude grade to distinguish them from reagent versions. In

3952-522: The Aztec people , the Paracas culture and other societies used cochineal , a vivid scarlet dye made from insects. From the 16th until the 19th century, cochineal became a highly profitable export from Spanish Mexico to Europe. In the 18th century, red began to take on a new identity as the color of resistance and revolution. It was already associated with blood, and with danger; a red flag hoisted before

4056-624: The Labour Party in the United Kingdom, founded in 1900. In Paris in 1832, a red flag was carried by working-class demonstrators in the failed June Rebellion , an event immortalised in Les Misérables ), and later in the 1848 French Revolution . The red flag was proposed as the new national French flag during the 1848 revolution, but was rejected by at the urging of the poet and statesman Alphonse Lamartine in favour of

4160-564: The Renaissance , the brilliant red costumes for the nobility and wealthy were dyed with kermes and cochineal . The 19th century brought the introduction of the first synthetic red dyes, which replaced the traditional dyes. Red became a symbolic color of communism and socialism ; Soviet Russia adopted a red flag following the Bolshevik Revolution in 1917. The Soviet red banner would subsequently be used throughout

4264-746: The St. George's Cross . According to Christian tradition, Saint George was a Roman soldier who was a member of the guards of the Emperor Diocletian , who refused to renounce his Christian faith and was martyred. The Saint George's Cross became the Flag of England in the 16th century, and now is part of the Union Flag of the United Kingdom, as well as the Flag of the Republic of Georgia . While red

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4368-535: The ruby laser in 1960. In 1962 the red helium–neon laser was invented, and these two types of lasers were widely used in many scientific applications including holography , and in education. Red helium–neon lasers were used commercially in LaserDisc players. The use of red laser diodes became widespread with the commercial success of modern DVD players, which use a 660 nm laser diode technology. Today, red and red-orange laser diodes are widely available to

4472-490: The CMY and CMYK color models, red is a secondary color subtractively mixed from magenta and yellow. In the RGB color model , red, green and blue are additive primary colors . Red, green and blue light combined makes white light, and these three colors, combined in different mixtures, can produce nearly any other color. This principle is used to generate colors on such as computer monitors and televisions. For example, magenta on

4576-518: The Instax SQUARE 1:1 format and compatible Instax SQ10 camera. Many major large format photographers use polaroids to examine what their film will develop into before shooting on film. Fujifilm instant films include: Since the stop of production of the packfilm, most photographers are using the existing stock available on the market. With analog photography being an increasing interest to more people, people have been adapting older cameras like

4680-698: The Instax series worldwide including North America and Europe simultaneously, but decided to work with Polaroid on the mio camera based on the Instax mini 10 for the US market; while Canada did get the Instax Wide 100. Another product was Fujifilm's Digital Instax Pivi film for their battery powered portable printer which was made available for those who wanted to print from their mobile phone via infrared, USB and Bluetooth. Fujifilm makes pack film for their passport camera systems, and had been available outside Japan since

4784-437: The Middle Ages, the Pope and Cardinals of the Roman Catholic Church wore red to symbolize the blood of Christ and the Christian martyrs. The banner of the Christian soldiers in the First Crusade was a red cross on a white field, the St. George's Cross . According to Christian tradition, Saint George was a Roman soldier who was a member of the guards of the Emperor Diocletian , who refused to renounce his Christian faith and

4888-464: The North American market. With the discontinuation of Polaroid instant film in 2008, Fuji started to export more of their instant film products to overseas markets, starting with making an increased variety of pack films available. In November 2008 the Instax Wide format was available in the US with the Instax 200 camera. Instax mini series of cameras and films became available in the US during

4992-553: The One Instant brand. Instant positive film (which produces a print) uses diffusion transfer to move the dyes from the negative to the positive via a reagent. The process varies according to the film type. In 1947 Edwin H. Land introduced the Polaroid-Land process. The first instant films produced sepia tone photos. A negative sheet is exposed inside the camera, then lined up with a positive sheet and squeezed through

5096-544: The Polaroid Land cameras 110A, 110B or 120, as these cameras have manual control, allowing photographers to have complete exposure control. Instant option is an online shop that is dedicated to sure modification service as well as other polaroid or instant film camera related modifications. There are also a lot of interest in having this as a personal project, as to make a functional camera does not require an extreme amount of work; articles from The phoblographer.com shows

5200-691: The United States District Court of Massachusetts ruled that seven patents were valid and infringed, two were invalid but infringed, and one was valid but not infringed by Kodak. Kodak appealed but was denied and an injunction prohibiting production of their instant film and cameras was put into effect. Kodak's appeal to the Supreme Court was denied a few months later, and in January 1986, Kodak announced it would no longer be producing their instant line of products. In 1991, Polaroid

5304-409: The atmosphere to the eye is longest, the blue and green components are removed almost completely, leaving the longer wavelength orange and red light. The remaining reddened sunlight can also be scattered by cloud droplets and other relatively large particles, which give the sky above the horizon its red glow. Lasers emitting in the red region of the spectrum have been available since the invention of

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5408-406: The atmosphere to the eye, some of the colors are scattered out of the beam by air molecules and airborne particles due to Rayleigh scattering , changing the final color of the beam that is seen. Colors with a shorter wavelength, such as blue and green, scatter more strongly, and are removed from the light that finally reaches the eye. At sunrise and sunset , when the path of the sunlight through

5512-710: The battery (thus lowering costs), for use in its Impossible I-1 camera (released in 2016), its Polaroid OneStep 2 camera (released in September 2017), and its Polaroid OneStep+ (released in September 2018). Summit Global Group, using the Polaroid brand, produced an instant photography camera and film starting with the Polaroid PIC 300, based on Fujifilm's Instax Mini 7. A company called New55 Holdings, LLC, ("New55 FILM") based in Ashland, Massachusetts, brought to market

5616-426: The cells of the leaf, and this development is the result of complex interactions of many influences—both inside and outside the plant. Their formation depends on the breakdown of sugars in the presence of bright light as the level of phosphate in the leaf is reduced. During the summer growing season, phosphate is at a high level. It has a vital role in the breakdown of the sugars manufactured by chlorophyll. But in

5720-546: The coast of South Africa, paleoanthropologists in 2000 found evidence that, between 170,000 and 40,000 years ago, Late Stone Age people were scraping and grinding ochre , a clay colored red by iron oxide , probably with the intention of using it to color their bodies. Red hematite powder was also found scattered around the remains at a grave site in a Zhoukoudian cave complex near Beijing . The site has evidence of habitation as early as 700,000 years ago. The hematite might have been used to symbolize blood in an offering to

5824-418: The color or combination of colors which form in the resulting image. Since the lines are so close to each other, the human eye easily blended the primary colors together to form the correct color, much like an LCD display or television. For instance, a photo of a yellow flower would expose the emulsion beneath the red and green masks and not the blue mask. The developing process removed the exposed emulsion (under

5928-490: The company shut down three factories and laid off 450 workers. In 2017, the Impossible Project acquired the rights to Polaroid's formats and trademarks, and, renaming itself Polaroid B.V. , resumed production of Polaroid film. PolaBlue, PolaChrome CS, PolaChrome HCP, PolaGraph HC, and PolaPan CT were 35 mm instant slide films. 20x24 P3 PolaColor, 20x24 P7 PolaColor, and 20x24 PolaPan. Kodak manufactured

6032-470: The concentration of a substance, e.g. by colorimetry . Examples include Fehling's reagent , Millon's reagent , and Tollens' reagent . In commercial or laboratory preparations, reagent-grade designates chemical substances meeting standards of purity that ensure the scientific precision and reliability of chemical analysis , chemical reactions or physical testing. Purity standards for reagents are set by organizations such as ASTM International or

6136-454: The cyan dye, an emulsion sensitive to red for film reversal and a nucleating agent, an oxidized developer scavenger, a releaser for the magenta dye, an emulsion sensitive to green for film reversal and a nucleating agent, another oxidized developer scavenger, a releaser for the yellow dye, an with emulsion sensitive to blue for film reversal and a nucleating agent, a UV absorbing topcoat, a mixture of processing reagents such as potassium hydroxide,

6240-647: The dead. Red, black and white were the first colors used by artists in the Upper Paleolithic age, probably because natural pigments such as red ochre and iron oxide were readily available where early people lived. Madder , a plant whose root could be made into a red dye, grew widely in Europe, Africa and Asia. The cave of Altamira in Spain has a painting of a bison colored with red ochre that dates to between 15,000 and 16,500 BC. A red dye called Kermes

6344-427: The developing dye layer migrates though diffusion to the positive surface where it forms the photo. Emulsion layers exposed to their respective color block the complementary dye below it, reproducing the original color. For example, a photo of a blue sky would expose the blue emulsion, blocking all the yellow dye beneath it and allowing the magenta and cyan dye layers to migrate to the positive to form blue. This process

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6448-526: The developing process contained in the more common instant photo sheets are caustic and can cause chemical burns . If these chemicals come into contact with skin, they should be washed off immediately. Reagent In chemistry , a reagent ( / r i ˈ eɪ dʒ ən t / ree- AY -jənt ) or analytical reagent is a substance or compound added to a system to cause a chemical reaction , or test if one occurs. The terms reactant and reagent are often used interchangeably, but reactant specifies

6552-509: The different ISO; However, the FI-10 series was discontinued in 2004. The faster ISO 800 instant films will work as well but would require the use of a filter either on the film cartridge or lens. In Japan, Fujifilm introduced their own line of instant photographic products in 1981 starting with the Fotorama line of cameras. The name Fotorama came from photograph and panorama, as the film was

6656-449: The dyes changes locally according to the local levels of these silver ions and in turn controls the amounts of dye that can diffuse to the image-receiving layer, and in which places. The dyes then diffuse through the stack and the reagent, driven by electrostatic and chemical gradients, and deposit into the image-receiving layer. The reagent is what allows the dyes to move up the stack via diffusion. Dye release frees dye molecules to move up

6760-696: The effect is likely to be produced by perceived rather than actual performance. Judges of tae kwon do have been shown to favor competitors wearing red protective gear over blue, and, when asked, a significant majority of people say that red abstract shapes are more "dominant", "aggressive", and "likely to win a physical competition" than blue shapes. In contrast to its positive effect in physical competition and dominance behavior, exposure to red decreases performance in cognitive tasks and elicits aversion in psychological tests where subjects are placed in an "achievement" context (e.g. taking an IQ test ). Inside cave 13B at Pinnacle Point , an archeological site found on

6864-794: The entire history of the Soviet Union . China adopted its own red flag following the Chinese Communist Revolution . A red flag was also adopted by North Vietnam in 1954, and by all of Vietnam in 1975. Since red is the color of blood , it has historically been associated with sacrifice, danger, and courage. Modern surveys in Europe and the United States show red is also the color most commonly associated with heat, activity, passion, sexuality, anger, love, and joy. In China, India , and many other Asian countries it

6968-412: The fall, phosphate, along with the other chemicals and nutrients, moves out of the leaf into the stem of the plant. When this happens, the sugar-breakdown process changes, leading to the production of anthocyanin pigments. The brighter the light during this period, the greater the production of anthocyanins and the more brilliant the resulting color display. When the days of autumn are bright and cool, and

7072-577: The field of biology, the biotechnology revolution in the 1980s grew from the development of reagents that could be used to identify and manipulate the chemical matter in and on cells. These reagents included antibodies ( polyclonal and monoclonal ), oligomers , all sorts of model organisms and immortalised cell lines , reagents and methods for molecular cloning and DNA replication , and many others. Tool compounds are an important class of reagent in biology. They are small molecules or biochemicals like siRNA or antibodies that are known to affect

7176-592: The film through the back. The negative and empty pod could be removed by peeling it off of the back of the print. Unlike Polaroid's integral film packs, Kodak's did not contain a battery, and used conventional batteries. Kodak's PR 10 film was found to have light fading stability issues. Polaroid filed suit against Eastman Kodak in April 1976 for the infringement of ten patents held by Edwin Land and others on his development team relating to instant photography. In September 1985,

7280-453: The human population. It occurs more frequently (2–6%) in people of northern or western European ancestry, and less frequently in other populations. Red hair appears in people with two copies of a recessive gene on chromosome 16 which causes a mutation in the MC1R protein. Red hair varies from a deep burgundy through burnt orange to bright copper . It is characterized by high levels of

7384-403: The iron components reflecting red light. Red meat gets its color from the iron found in the myoglobin and hemoglobin in the muscles and residual blood. Plants like apples , strawberries , cherries , tomatoes , peppers , and pomegranates are often colored by forms of carotenoids , red pigments that also assist photosynthesis . Red hair occurs naturally on approximately 1–2% of

7488-441: The laser's recordings to take up more space on the disc than would blue-laser recordings. The most common synthetic food coloring today is Allura Red AC , a red azo dye that goes by several names including: Allura Red , Food Red 17 , C.I. 16035 , FD&C Red 40 , It was originally manufactured from coal tar, but now is mostly made from petroleum. In Europe, Allura Red AC is not recommended for consumption by children. It

7592-466: The market, provided that they have a technology sharing agreement. Polaroid was interested in branching out to magnetic media in the boom of the videotape era and had acquired a company called MagMedia Ltd. Fujifilm has a long history in magnetic media dating to the mid-1950s. This led to Polaroid having access to Fujifilm's extensive electronic, video tape and floppy disc magnetic products. This allowed Fujifilm access to Polaroid's film technology. By

7696-619: The mid-1980s Fujifilm introduced the higher ISO System 800 series, followed by the ACE series in the mid-1990s. Instant ACE is nearly identical to System 800, the only difference is the design of the plastic cartridge in the ACE do not contain the spring mechanism (the spring is in the camera). Most of these products were available only in the Japanese market, until the release of Instax series of cameras in 1998. Fujifilm originally wanted to release

7800-552: The mid-1980s. No legal issues arose with Fuji's peel apart instant films as Polaroid's patents had expired. While very popular in Australia as a cheaper alternative to Polaroid, it was generally not too well known elsewhere due to Polaroid's dominance in most countries. In 2000, Fuji decided to change the way they manufacture pack film, making the entire pack out of plastic instead of a metal and plastic combination. Fujifilm announced at PMA 2003 that pack film would be made available to

7904-604: The miners were slaves or prisoners, and being sent to the cinnabar mines was a virtual death sentence. After the fall of the Western Roman Empire, red was adopted as a color of majesty and authority by the Byzantine Empire , and the princes of Europe. It also played an important part in the rituals of the Roman Catholic Church , symbolizing the blood of Christ and the Christian martyrs. In Western Europe, Emperor Charlemagne painted his palace red as

8008-466: The murals was called vermilion , and it came from the mineral cinnabar , a common ore of mercury . It was one of the finest reds of ancient times – the paintings have retained their brightness for more than twenty centuries. The source of cinnabar for the Romans was a group of mines near Almadén , southwest of Madrid , in Spain. Working in the mines was extremely dangerous, since mercury is highly toxic;

8112-470: The negative component of Polaroid's instant film from 1963 to 1969, when Polaroid decided to manufacture its own. Kodak's original plan was to create packfilm type instant products. There were many prototypes and test runs of the film with many private demonstrations to their board. Plans changed when Polaroid in 1972 released the integral type film with the introduction of the SX-70 system. Kodak decided to scrap

8216-530: The nights are chilly but not freezing, the brightest colorations usually develop. Anthocyanins temporarily color the edges of some of the very young leaves as they unfold from the buds in early spring. They also give the familiar color to such common fruits as cranberries , red apples , blueberries , cherries , raspberries , and plums . Anthocyanins are present in about 10% of tree species in temperate regions, although in certain areas—a famous example being New England —up to 70% of tree species may produce

8320-463: The pale red pink to the dark red burgundy . Red pigment made from ochre was one of the first colors used in prehistoric art . The Ancient Egyptians and Mayans colored their faces red in ceremonies; Roman generals had their bodies colored red to celebrate victories. It was also an important color in China , where it was used to color early pottery and later the gates and walls of palaces. In

8424-461: The perception of dominance by others, leading to significant differences in mortality, reproductive success and parental investment between individuals displaying red and those not. In humans, wearing red has been linked with increased performance in competitions, including professional sport and multiplayer video games . Controlled tests have demonstrated that wearing red does not increase performance or levels of testosterone during exercise, so

8528-424: The photo without any intervention from the photographer. Instant film has been available in sizes from 24 mm × 36 mm (0.94 in × 1.42 in) (similar to 135 film ) up to 50.8 cm × 61 cm (20 in × 24 in) size, with the most popular film sizes for consumer snapshots being approximately 83 mm × 108 mm (3.3 in × 4.3 in) (the image itself

8632-691: The picture which was transferred to the positive receiving sheet. True black and white films were released in 1950 after problems with chemistry stabilization were overcome. The reagent was contained in a pod, which would be pressed and eventually broken by the rollers that would then spread the reagent across the film. The reagent contained a solvent for silver halide such as sodium thiosulfate, for example. With that being said, photographers and enthusiasts still practice with this limited, special and discontinued film, with both older Polaroid stocks or Fujifilm FP-100C or FP-3000B varieties. Multiple companies made film backs that would adapt camera to use this film with

8736-440: The pigment. In autumn forests they appear vivid in the maples , oaks , sourwood , sweetgums , dogwoods , tupelos , cherry trees and persimmons . These same pigments often combine with the carotenoids' colors to create the deeper orange, fiery reds, and bronzes typical of many hardwood species. (See Autumn leaf color ). Oxygenated blood is red due to the presence of oxygenated hemoglobin that contains iron molecules, with

8840-428: The plans for packfilm release and focus on an integral type process. A few years later Kodak introduced its own instant film products in 1976, which was different from Polaroid's in several ways: Kodak instant film was exposed from the back without a mirror, the opposite of Polaroid's film which was exposed from the front with a mirror to reverse the image. Kodak used a matte finish on the front, made possible by exposing

8944-527: The process of doing such modifications. A group called the Impossible Project acquired Polaroid's old equipment and factory in Enschede , in the Netherlands . On their website they stated: We aim to re-start production of analog instant film for vintage Polaroid cameras in 2010. and "The Impossible mission is not to re-build Polaroid Integral film but (with the help of strategic partners) to develop

9048-546: The public in the form of extremely inexpensive laser pointers . Portable, high-powered versions are also available for various applications. More recently, 671 nm diode-pumped solid state ( DPSS ) lasers have been introduced to the market for all-DPSS laser display systems, particle image velocimetry , Raman spectroscopy , and holography. Red's wavelength has been an important factor in laser technologies; red lasers, used in early compact disc technologies, are being replaced by blue lasers, as red's longer wavelength causes

9152-437: The quality of traditional film types. Instant film was used where it was undesirable to have to wait for a roll of conventional film to be finished and processed, e.g., documenting evidence in law enforcement, in health care and scientific applications, and producing photographs for passports and other identity documents, or simply for snapshots to be seen immediately. Some photographers use instant film for test shots, to see how

9256-446: The red and green masks) and diffused the unexposed dye developer (under the blue mask) to its receiving layer, blocking light from coming through. This resulted in the projected light shining through the red and green masks but not the blue mask, creating the color yellow. Because of the film density, film speeds were necessarily slow. High precision was required for the production of this film. Polaroid Corporation invented and produced

9360-516: The reddish pigment pheomelanin (which also accounts for the red color of the lips) and relatively low levels of the dark pigment eumelanin . The term "redhead" (originally redd hede ) has been in use since at least 1510. Red is associated with dominance in a number of animal species. For example, in mandrills , red coloration of the face is greatest in alpha males, increasingly less prominent in lower ranking subordinates, and directly correlated with levels of testosterone . Red can also affect

9464-732: The result to be viewed immediately on a display screen or printed with dye sublimation , inkjet , or laser home or professional printers. Instant film is notable for having had a wider range of film speeds available than other negative films of the same era, having been produced in ISO ;40 to ISO 20,000 (Polaroid 612). Current instant film formats typically have an ISO between 100 and 1000. Two companies currently manufacture instant film for Polaroid cameras: Polaroid (previously The Impossible Project) for older Polaroid cameras (600, SX-70, and 8×10) and its I-Type cameras, and Supersense that manufacture pack film for Polaroid cameras under

9568-548: The second half of 2009, with the mini 7s, also an updated Instax 210 replaced the Instax 200. Fujifilm's FP-100b45 was announced in Sept of 2009 for the US market. The FP-3000b45 arrived in the North American market in Jan 2011, after Fujifilm Japan stopped manufacturing FP-100b, but was discontinued in 2012. In late 2012 Fujifilm discontinued FP-3000B, followed by the discontinuation of FP-100C in spring 2016. In April 2017 Fujifilm announced

9672-438: The side that is exposed to light, is opposite to that used to view the photograph, and another where the same side is used for exposing the photograph and viewing it, developed by Kodak. Again to develop the film a pod with a reagent on one side of the film is broken and the contents are spread within the integral film. For films with the same view/expose side the reagent had white pigment, opacifying dyes, potassium hydroxide, and

9776-399: The stack via diffusion into the image-receiving layer. Additive film (such as Polavision and Polachrome slide film) uses a color mask of microscopically thin transparent red, green, and blue lines (3000 lines per inch) and a black and white emulsion layer to reproduce color images in transparency film. The resulting dye developers (unexposed emulsion) block the colors not needed and project

9880-528: The tiny female cochineal insect. This insect, originating in Mexico and Central America, was used to make the brilliant scarlet dyes of the European Renaissance. The red of autumn leaves is produced by pigments called anthocyanins . They are not present in the leaf throughout the growing season, but are actively produced towards the end of summer. They develop in late summer in the sap of

9984-467: The tricolor flag. It appeared again as the flag of the short-lived Paris Commune in 1871. It was then adopted by Karl Marx and the new European movements of socialism and communism . Soviet Russia adopted a red flag following the Bolshevik Revolution in 1917. The People's Republic of China adopted the red flag following the Chinese Communist Revolution . It was adopted by North Vietnam in 1954, and by all of Vietnam in 1975. Surveys show that red

10088-715: The upper classes. In Renaissance Flanders , people of all social classes wore red at celebrations. One such celebration was captured in The Wedding Dance (1566) by Pieter Bruegel the Elder . The painter Johannes Vermeer skilfully used different shades and tints of vermilion to paint the red skirt in The Girl with the Wine Glass , then glazed it with madder lake to make a more luminous color. In Latin America,

10192-447: The widest range of instant film. Roll film was distributed in two separate negative and positive rolls and developed inside the camera. It was introduced in 1948 and was manufactured until 1992. Sheet film was introduced in 1958 for 4x5" film holder #500. Each sheet contains a reagent pod, negative and receiving positive, and was loaded separately and developed outside the film holder. In 1973 Polaroid introduced 8x10" Instant film. Pack film

10296-619: Was awarded $ 925 million in damages from Kodak. While Kodak instant films have been discontinued, Fuji's instant film available in Japan since the 1980s is very similar to Kodak's. The pictures are the same size, the cartridge is almost the same, with some easy plastic modifications; the Fuji Fotorama series film can be made to fit. It was closest to the Kodak with the ISO at 160, many of the camera's brightness controls can be adjusted to work with

10400-526: Was distributed in a film pack which contained both negative and positive sheets and was developed outside the camera. It was introduced in 1963. Integral film is also distributed in a film pack, but each film envelope contains all the chemical layers to expose, develop, and fix the photo. It was introduced in 1972. Polavision was an instant motion picture film. Polavision was introduced by Polaroid in 1978, with an image format similar to Super 8 mm film , and based on an additive color process. Polavision required

10504-496: Was later used by Romans, who imported it from Spain. A different variety of dye was made from Porphyrophora hamelii (Armenian cochineal) scale insects that lived on the roots and stems of certain herbs. It was mentioned in texts as early as the 8th century BC, and it was used by the ancient Assyrians and Persians. In ancient Egypt, red was associated with life, health, and victory. Egyptians would color themselves with red ochre during celebrations. Egyptian women used red ochre as

10608-531: Was made beginning in the Neolithic Period by drying and then crushing the bodies of the females of a tiny scale insect in the genus Kermes , primarily Kermes vermilio . The insects live on the sap of certain trees, especially Kermes oak trees near the Mediterranean region. Jars of kermes have been found in a Neolithic cave-burial at Adaoutse, Bouches-du-Rhône . Kermes from oak trees

10712-416: Was martyred. The Saint George's Cross became the Flag of England in the 16th century, and now is part of the Union Flag of the United Kingdom, as well as the Flag of the Republic of Georgia . In Renaissance painting, red was used to draw the attention of the viewer; it was often used as the color of the cloak or costume of Christ , the Virgin Mary , or another central figure. In Venice , Titian

10816-562: Was the master of fine reds, particularly vermilion ; he used many layers of pigment mixed with a semi-transparent glaze, which let the light pass through, to create a more luminous color. The figures of God, the Virgin Mary and two apostles are highlighted by their vermilion red costumes. Queen Elizabeth I of England liked to wear bright reds, before she adopted the more sober image of the "Virgin Queen". Red costumes were not limited to

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