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50-640: The water power of the Linth was a main factor in the creation of the textile industry of the canton Glarus, and is today used to drive the Linth–Limmern power stations in its upper reaches. The river and its upper valley forms the boundary between the mountain ranges of the Glarus Alps , to its east and south, and the Schwyzer Alps , to its west. In its lower part, in the Linth plain ( Linthebene ),

100-419: A thesis (or dissertation) during an oral examination . To aid them in this endeavor, graduate students often work under the guidance of a mentor , usually a senior scientist, which may continue after the completion of their doctorates whereby they work as postdoctoral researchers . After the completion of their training, many scientists pursue careers in a variety of work settings and conditions. In 2017,

150-480: A brass hook that was holding the leg in place. The leg twitched. Further experiments confirmed this effect, and Galvani was convinced that he was seeing the effects of what he called animal electricity, the life force within the muscles of the frog. At the University of Pavia , Galvani's colleague Alessandro Volta was able to reproduce the results, but was sceptical of Galvani's explanation. Lazzaro Spallanzani

200-625: A common term in the late 19th century in the United States and around the turn of the 20th century in Great Britain . By the twentieth century, the modern notion of science as a special brand of information about the world, practiced by a distinct group and pursued through a unique method, was essentially in place. Marie Curie became the first woman to win the Nobel Prize and the first person to win it twice. Her efforts led to

250-537: A cultivator of physics, I have called him a Physicist . We need very much a name to describe a cultivator of science in general. I should incline to call him a Scientist . Thus we might say, that as an Artist is a Musician, Painter, or Poet, a Scientist is a Mathematician, Physicist, or Naturalist. He also proposed the term physicist at the same time, as a counterpart to the French word physicien . Neither term gained wide acceptance until decades later; scientist became

300-588: A profession, the scientist of today is widely recognized . However, there is no formal process to determine who is a scientist and who is not a scientist. Anyone can be a scientist in some sense. Some professions have legal requirements for their practice (e.g. licensure ) and some scientists are independent scientists meaning that they practice science on their own, but to practice science there are no known licensure requirements. In modern times, many professional scientists are trained in an academic setting (e.g., universities and research institutes ), mostly at

350-410: A result, scientific researchers often accept lower average salaries when compared with many other professions which require a similar amount of training and qualification. Scientists include experimentalists who mainly perform experiments to test hypotheses, and theoreticians who mainly develop models to explain existing data and predict new results. There is a continuum between two activities and

400-456: A widely regarded prestigious award, is awarded annually to those who have achieved scientific advances in the fields of medicine , physics , and chemistry . Some scientists have a desire to apply scientific knowledge for the benefit of people's health, the nations, the world, nature, or industries (academic scientist and industrial scientist ). Scientists tend to be less motivated by direct financial reward for their work than other careers. As

450-523: Is considered by many to be the "final frontier". There are many important discoveries to make regarding the nature of the mind and human thought , much of which still remains unknown. The number of scientists is vastly different from country to country. For instance, there are only four full-time scientists per 10,000 workers in India, while this number is 79 for the United Kingdom, and 85 for

500-549: Is one of the most influential figures in experimental physiology and the natural sciences. His investigations have exerted a lasting influence on the medical sciences. He made important contributions to the experimental study of bodily functions and animal reproduction. Francesco Redi discovered that microorganisms can cause disease . Until the late 19th or early 20th century, scientists were still referred to as " natural philosophers " or "men of science". English philosopher and historian of science William Whewell coined

550-428: The quadrivium —mathematics, including astronomy. Hence, the medieval analogs of scientists were often either philosophers or mathematicians. Knowledge of plants and animals was broadly the province of physicians. Science in medieval Islam generated some new modes of developing natural knowledge, although still within the bounds of existing social roles such as philosopher and mathematician. Many proto-scientists from

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600-613: The British Association for the Advancement of Science had been complaining at recent meetings about the lack of a good term for "students of the knowledge of the material world collectively." Alluding to himself, he noted that "some ingenious gentleman proposed that, by analogy with artist , they might form [the word] scientist , and added that there could be no scruple in making free with this term since we already have such words as economist , and atheist —but this

650-885: The Clariden Glacier and the Biferten Glacier , as well as various tributary streams, including the Oberstafelbach , the Bifertenbach , the Sandbach , the Walenbach and the Limmerenbach . The last of these is dammed to create the Limmerensee , a part of the Linth–Limmern hydro-electric scheme . The river then flows north to the village of Linthal, the highest significant settlement on

700-572: The Hintersand Balancing Reservoir has a storage capacity of 110,000 m (89 acre⋅ft). The middle reservoir in the complex is the Tierfehd Balancing Reservoir , located at an altitude of 811 m (2,661 ft) above sea level. It was built in 1964 with an original storage capacity of 210,000 m (170 acre⋅ft), but was later expanded to 560,000 m (450 acre⋅ft) during

750-485: The Islamic Golden Age are considered polymaths , in part because of the lack of anything corresponding to modern scientific disciplines . Many of these early polymaths were also religious priests and theologians : for example, Alhazen and al-Biruni were mutakallimiin ; the physician Avicenna was a hafiz ; the physician Ibn al-Nafis was a hafiz, muhaddith and ulema ; the botanist Otto Brunfels

800-743: The Linthal Power Station , which has two 17.2 MW Pelton turbines. From there, the Linthal Power Station discharges the water into the Linthal Balancing Reservoir and into the Linth river. Standseilbahn Linth-Limmern is a funicular from Tierfehd to the Limmern Power Station. Scientist A scientist is a person who researches to advance knowledge in an area of the natural sciences . In classical antiquity , there

850-505: The Roman Empire and, with the spread of Christianity , became closely linked to religious institutions in most European countries. Astrology and astronomy became an important area of knowledge, and the role of astronomer/astrologer developed with the support of political and religious patronage . By the time of the medieval university system, knowledge was divided into the trivium —philosophy, including natural philosophy —and

900-789: The Scientific Revolution that began in 16th century as the period when science in a recognizably modern form developed. It was not until the 19th century that sufficient socioeconomic changes had occurred for scientists to emerge as a major profession. Knowledge about nature in classical antiquity was pursued by many kinds of scholars. Greek contributions to science—including works of geometry and mathematical astronomy, early accounts of biological processes and catalogs of plants and animals, and theories of knowledge and learning—were produced by philosophers and physicians , as well as practitioners of various trades. These roles, and their associations with scientific knowledge, spread with

950-599: The town of Glarus before reaching the village of Netstal . In Netstal, the Linth is joined by the Löntsch , which drains the Klöntalersee . The Linth then flows between the villages Näfels and Mollis , from where it formerly flowed in a northerly direction to a confluence with its tributary outfall from Lake Walen (Walensee) on the Linth Plain, and then across that plain in a westerly direction to its mouth at

1000-519: The British scientific journal Nature published the results of a large-scale survey of more than 5,700 doctoral students worldwide, asking them which sectors of the economy they would like to work in. A little over half of the respondents wanted to pursue a career in academia, with smaller proportions hoping to work in industry, government, and nonprofit environments. Other motivations are recognition by their peers and prestige. The Nobel Prize ,

1050-529: The Linth Canal forms the boundary between the cantons of Glarus and St. Gallen and part of the boundary between the cantons of St. Gallen and Schwyz . The river lends its name to the former canton of Linth (1798–1803). The river rises to the south-west of the village of Linthal , at the foot the Tödi mountain (elevation 3,614 metres or 11,857 feet). It collects the water from several glaciers, including

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1100-494: The Linth plain. Linth%E2%80%93Limmern Power Stations The Linth–Limmern Power Stations are a system of hydroelectric power stations located south of Linthal in the canton of Glarus , Switzerland . The system uses five reservoirs and four power stations at steep variations in altitude. Works on the complex began in 1957 with the construction of Lake Limmern Dam and the Mutt, Tierfehd and Linthal Power Stations. The dam

1150-678: The Linthal 2015 expansion project. Finally, the Linthal Balancing Reservoir is located down in the valley at an elevation of 676 m (2,218 ft) above sea level, and withholds 210,000 m (170 acre⋅ft) of water. It has a direct discharge into the Linth river . Between Lake Mutt and Lake Limmern are the Mutt Power Station , in service since 1965 containing a single 4.4 MW Pelton turbine , and

1200-551: The United States. According to the National Science Foundation , 4.7 million people with science degrees worked in the United States in 2015, across all disciplines and employment sectors. The figure included twice as many men as women. Of that total, 17% worked in academia, that is, at universities and undergraduate institutions, and men held 53% of those positions. 5% of scientists worked for

1250-618: The development of nuclear energy and Radiotherapy for the treatment of cancer. In 1922, she was appointed a member of the International Commission on Intellectual Co-operation by the Council of the League of Nations. She campaigned for scientist's right to patent their discoveries and inventions. She also campaigned for free access to international scientific literature and for internationally recognized scientific symbols. As

1300-411: The development of science) have had widely different places in society, and the social norms , ethical values , and epistemic virtues associated with scientists—and expected of them—have changed over time as well. Accordingly, many different historical figures can be identified as early scientists, depending on which characteristics of modern science are taken to be essential. Some historians point to

1350-553: The division between them is not clear-cut, with many scientists performing both tasks. Those considering science as a career often look to the frontiers. These include cosmology and biology , especially molecular biology and the human genome project. Other areas of active research include the exploration of matter at the scale of elementary particles as described by high-energy physics , and materials science , which seeks to discover and design new materials. Others choose to study brain function and neurotransmitters , which

1400-465: The federal government, and about 3.5% were self-employed. Of the latter two groups, two-thirds were men. 59% of scientists in the United States were employed in industry or business, and another 6% worked in non-profit positions. Scientist and engineering statistics are usually intertwined, but they indicate that women enter the field far less than men, though this gap is narrowing. The number of science and engineering doctorates awarded to women rose from

1450-611: The head of the Obersee section of Lake Zurich . As a result of the river regulation works (see below), the river is today diverted down an artificial channel in an easterly direction into Lake Walen. Another artificial channel (the Linth Channel) then takes the outfall of Lake Walen at Weesen and flows west through the Linth Plain and into the Obersee. The taming of the Linth ( German : Linthkorrektur ) from 1807 to 1823

1500-431: The ideas behind computers , and some of the foundations of statistical mechanics and quantum mechanics . Many mathematically inclined scientists, including Galileo , were also musicians . There are many compelling stories in medicine and biology , such as the development of ideas about the circulation of blood from Galen to Harvey . Some scholars and historians attributes Christianity to having contributed to

1550-508: The last unit in Limmern was completed by December 2017, bringing the total installed capacity of the system to 1480 MW. The highest reservoir in the complex is Lake Mutt ( Muttsee ), situated at 2,474 m (8,117 ft) above sea level. It had an original storage capacity of 9,000,000 m (7,300 acre⋅ft), and was later expanded to 25,000,000 m (20,000 acre⋅ft) during the Linthal 2015 expansion, to hold extra capacity for

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1600-495: The latest expansion to the complex, the Limmern Power Station , which completed commissioning in late 2017 and has four 250 MW Francis pump-turbine . These four reversible pump-turbines are of slip energy recovery variable-speed type . During periods of low demand, water can be pumped from Lake Limmern to Lake Mutt and when energy demand is high, the water is released down for generation. The same turbines that pump

1650-522: The level of graduate schools . Upon completion, they would normally attain an academic degree , with the highest degree being a doctorate such as a Doctor of Philosophy (PhD). Although graduate education for scientists varies among institutions and countries, some common training requirements include specializing in an area of interest, publishing research findings in peer-reviewed scientific journals and presenting them at scientific conferences , giving lectures or teaching , and defending

1700-676: The new pumped-storage power station. A 2.2 MW solar farm was added to the Muttsee dam in 2021, supplying 3.3 GWh per year. Below Lake Mutt, the main reservoir in the complex is Lake Limmern ( Limmernsee ), which was created by a 146 m (479 ft) tall and 375 m (1,230 ft) long arch dam on the Limmern Creek. At an elevation of 1,857 m (6,093 ft) above sea level, it can store up to 92,000,000 m (75,000 acre⋅ft) of water. At an elevation of 1,298 m (4,259 ft) above sea level in an adjacent valley,

1750-494: The plan of channeling the Linth into Lake Walen, where the gravel could be deposited without damage. A second channel, the Linth Channel, connected the lakes of Walen and Zurich, replacing the former Maag. The river regulation put an end to the floodings, lowered the level of Lake Walen by some 5.4 meters which greatly improved living conditions for the population, and dried up the swamps, resulting in 20 km arable land in

1800-427: The rise of the Scientific Revolution . During the age of Enlightenment, Luigi Galvani , the pioneer of bioelectromagnetics , discovered animal electricity. He discovered that a charge applied to the spinal cord of a frog could generate muscular spasms throughout its body. Charges could make frog legs jump even if the legs were no longer attached to a frog. While cutting a frog leg, Galvani's steel scalpel touched

1850-480: The river, and onwards through the canton of Glarus villages of Rüti , Betschwanden , Diesbach , Hätzingen , Luchsingen , Leuggelbach , Haslen , Nidfurn and Schwanden . In Schwanden, the Linth is joined by one of its principal tributaries, the Sernf , which drains the south-eastern part of the canton of Glarus. From Schwanden, the river continues to flow north through the villages of Mitlödi and Ennenda and

1900-504: The same time as Leibniz ). He provided a comprehensive formulation of classical mechanics and investigated light and optics. Fourier founded a new branch of mathematics — infinite, periodic series — studied heat flow and infrared radiation , and discovered the greenhouse effect . Girolamo Cardano , Blaise Pascal Pierre de Fermat , Von Neumann , Turing , Khinchin , Markov and Wiener , all mathematicians, made major contributions to science and probability theory , including

1950-647: The term scientist in 1833, and it first appeared in print in Whewell's anonymous 1834 review of Mary Somerville 's On the Connexion of the Physical Sciences published in the Quarterly Review . Whewell wrote of "an increasing proclivity of separation and dismemberment" in the sciences; while highly specific terms proliferated—chemist, mathematician, naturalist—the broad term "philosopher"

2000-455: The thermometer and telescope which allowed him to observe and clearly describe the solar system. Descartes was not only a pioneer of analytic geometry but formulated a theory of mechanics and advanced ideas about the origins of animal movement and perception . Vision interested the physicists Young and Helmholtz , who also studied optics , hearing and music . Newton extended Descartes's mathematics by inventing calculus (at

2050-529: The water to Lake Mutt reverse into generator mode. The difference in elevation between the two lakes affords a net hydraulic head of 623 m (2,044 ft). Lake Limmern also provides water to the Tierfehd Power Station further down in the valley for conventional hydroelectric generation and pumped-storage. This power station includes three 87 MW Pelton turbines, in service since 1964, and one 140 MW Francis reversible pump-turbine, that

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2100-642: The yearly spring high water which was deposited at the joining of Linth and Maag, the outflow of the Lake Walen, in the plain between Lake Walen and Lake Zurich. This caused frequent floodings and backing up of water which made the level of Lake Walen rise several meters and turned the whole countryside into swamps. Agriculture became more and more difficult, the poverty increased, and diseases like tuberculosis and malaria were rampant. The statesman , scientist , painter and manager Conrad Escher (later named "von der Linth") from Zurich developed and executed

2150-659: Was a theologian and historian of Protestantism; the astronomer and physician Nicolaus Copernicus was a priest. During the Italian Renaissance scientists like Leonardo da Vinci , Michelangelo , Galileo Galilei and Gerolamo Cardano have been considered the most recognizable polymaths. During the Renaissance , Italians made substantial contributions in science. Leonardo da Vinci made significant discoveries in paleontology and anatomy. The Father of modern Science, Galileo Galilei , made key improvements on

2200-739: Was added to the complex in 2009. Additionally, the Hintersand Balancing Reservoir provides water to two 20 MW Pelton turbines also within the Tierfehd Power Station. Also in this Power Station, a 34 MW electrically driven pump allows the transfer of water from Hintersand Reservoir up to Lake Limmern. Water used for power generation at Tierfehd is discharged into the Tierfehd Balancing Reservoir. The water in this reservoir can either be pumped back up to Lake Limmern or directed down to

2250-411: Was coined by the theologian , philosopher , and historian of science William Whewell in 1833. The roles of "scientists", and their predecessors before the emergence of modern scientific disciplines, have evolved considerably over time. Scientists of different eras (and before them, natural philosophers, mathematicians, natural historians, natural theologians, engineers, and others who contributed to

2300-477: Was complete in 1963 and the power stations were all operational by 1968, with an installed capacity of 340 MW. In 2009, a 140 MW pumped-storage component between Lake Limmern and Tierfehd Reservoir was commissioned. In 2010, construction began on the Linthal 2015 Project, which included the expansion of Lake Mutt and Tierfehd Reservoir, and the addition of the Limmern Power Station, a 1,000 MW pumped-storage component between Lake Mutt and Lake Limmern. Commissioning of

2350-417: Was no longer satisfactory to group together those who pursued science, without the caveats of "natural" or "experimental" philosopher. Whewell compared these increasing divisions with Somerville's aim of "[rendering] a most important service to science" "by showing how detached branches have, in the history of science, united by the discovery of general principles." Whewell reported in his review that members of

2400-439: Was no real ancient analog of a modern scientist. Instead, philosophers engaged in the philosophical study of nature called natural philosophy , a precursor of natural science . Though Thales ( c.  624–545 BC) was arguably the first scientist for describing how cosmic events may be seen as natural, not necessarily caused by gods, it was not until the 19th century that the term scientist came into regular use after it

2450-512: Was not generally palatable". Whewell proposed the word again more seriously (and not anonymously) in his 1840 The Philosophy of the Inductive Sciences : The terminations ize (rather than ise ), ism , and ist , are applied to words of all origins: thus we have to pulverize , to colonize , Witticism , Heathenism , Journalist , Tobacconist . Hence we may make such words when they are wanted. As we cannot use physician for

2500-529: Was one of the great engineering feats of the early 19th century, the earliest project of such a size undertaken by the new Swiss state, and a great example of solidarity in early Switzerland. In the second half of the 18th century, the situation of the population in the lower Glarus valley, the Linth Plain and around Lake Walen, was pretty disastrous: cutting down the woods of the Glarus valley during early industrialization led to more and more gravel coming down with

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