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Selig Hecht
Selig Hecht (1892–1947) was an American physiologist who studied photochemistry in photoreceptor cells. Life Hecht was born in Glogau, then in the German Empire (now Głogów in Poland), the son of Mandel Hecht and Mary Mresse. The family migrated to the USA in 1898, settling in New York City. His studies and talents led to Columbia University making him professor of biophysics in 1928. In June 1917 Hecht received his Ph.D. and married Celia Huebschmann. Their daughter Maressa was born in 1924. Hecht began his study into light sensitivity with clams (''Mya arenaria'') and insects. His specialty was photochemistry, the kinetics of the reactions initiated by light in the receptors. He made contributions to the knowledge of dark adaptation, visual acuity, brightness discrimination, color vision, and the mechanism of the visual threshold. He spent time as a post-doctoral researcher with the group of Edward Charles Cyril Baly at the University of Liverpool, UK. Baly was a pionee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photochemistry
Photochemistry is the branch of chemistry concerned with the chemical effects of light. Generally, this term is used to describe a chemical reaction caused by absorption of ultraviolet (wavelength from 100 to 400 nm), visible light (400–750 nm) or infrared radiation (750–2500 nm). In nature, photochemistry is of immense importance as it is the basis of photosynthesis, vision, and the formation of vitamin D with sunlight. Photochemical reactions proceed differently than temperature-driven reactions. Photochemical paths access high energy intermediates that cannot be generated thermally, thereby overcoming large activation barriers in a short period of time, and allowing reactions otherwise inaccessible by thermal processes. Photochemistry can also be destructive, as illustrated by the photodegradation of plastics. Concept Grotthuss–Draper law and Stark-Einstein law Photoexcitation is the first step in a photochemical process where the reactant is elevated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physiological Reviews
''Physiological Reviews'' is a journal published quarterly by the American Physiological Society which has been published since 1921. The editor in chief of the journal is Sadis Matalon (University of Alabama at Birmingham). The journal's first managing editor, who served to his death in 1946, was Dr. Donald R. Hooker. Among the cadre of editors at the journal's inception were William Henry Howell, Lafayette Mendel, and John Macleod. From 1932 to 1950, the chairman of the board of editors of the journal was Anton J. Carlson. Other notable people who have served on the journal's editorial board include John Jacob Abel (c.1935), Ernest William Goodpasture (c.1938). According to the Journal Citation Reports, the journal has a 2020 impact factor of 37.312Internet Archive page set(values in table linked to specific pages) References Further reading * ResearchGate ResearchGate is a European commercial social networking site for scientists and researchers to share papers, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
One Two Three
''One Two Three'' is a 2008 Indian Hindi-language comedy film that is an unofficial remake of the 1992 American film ''Blame It on the Bellboy'' about three men with similar surnames staying in the same hotel.The movie stars Sunil Shetty, Paresh Rawal, Tushar Kapoor, Esha Deol, Sameera Reddy, Neetu Chandra, Upen Patel and Tanisha. It revolves around three men who share the same name — Laxmi Narayan. Synopsis Laxmi 1 (Tushar Kapoor) lives a poor man's lifestyle in Mumbai with his widowed mother Kanta, who wants him to be a gangster and would like him to kill people, make money, then marry Chota Khujli's daughter, Meena Khujli. To fulfill his mother's wish, he accepts a contract to kill D'Mello Yadav (Mukesh Tiwari), a Pondi-based gangster who has stolen a diamond. Laxmi 2 (Sunil Shetty), is the detailed and obedient Secretary of D.M. Pipat. He wants him to buy a vintage car from a Pondi-based used car dealer, Laila (Sameera Reddy). Laxmi 3 ( Paresh Rawal) sells undergarmen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Gamow
George Gamow (March 4, 1904 – August 19, 1968), born Georgiy Antonovich Gamov ( uk, Георгій Антонович Гамов, russian: Георгий Антонович Гамов), was a Russian-born Soviet and American polymath, theoretical physicist and cosmologist. He was an early advocate and developer of Lemaître's Big Bang theory. He discovered a theoretical explanation of alpha decay by quantum tunneling, invented the liquid drop model and the first mathematical model of the atomic nucleus, and worked on radioactive decay, star formation, stellar nucleosynthesis and Big Bang nucleosynthesis (which he collectively called nucleocosmogenesis), and molecular genetics. In his middle and late career, Gamow directed much of his attention to teaching and wrote popular books on science, including '' One Two Three... Infinity'' and the ''Mr Tompkins'' series of books (1939–1967). Some of his books are still in print more than a half-century after their original publicat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eugene Rabinowitch
Eugene Rabinowitch (1901–1973) was a Russian-born American biophysicist who is known for his work in photosynthesis and nuclear energy. He was a co-author of the Franck Report and a co-founder in 1945 of the ''Bulletin of the Atomic Scientists'', a global security and public policy magazine, which he edited until his death. Early life Rabinowitch was born Evgenii Isaakovich Rabinovich in Saint Petersburg; his parents were a lawyer and pianist. During WWI Rabinowitch studied chemistry in St. Petersburg. Initially a supporter of the Russian Revolution, he and his family fled to Kiev and then Warsaw with the onset of the Red Terror in late 1918. Ultimately fleeing to Germany, Rabinowitch was able to take a course Einstein taught on relativity, and attend academic events that included Max Planck and Max von Laue. He later worked with James Franck at Göttingen. After the Nazis came to power in Germany in 1933, Rabinowitch worked for a year with Nils Bohr in Denmark, before finding ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientific Monthly
''The Scientific Monthly'' was a science magazine published from 1915 to 1957. Psychologist James McKeen Cattell, the former publisher and editor of ''The Popular Science Monthly'', was the original founder and editor. In 1958, ''The Scientific Monthly'' was absorbed by ''Science''. References External links Archived The Scientific Monthlyon the Internet Archive The Internet Archive is an American digital library with the stated mission of "universal access to all knowledge". It provides free public access to collections of digitized materials, including websites, software applications/games, music, ... * Hathi Trust records - https://catalog.hathitrust.org/Record/000519252 American Association for the Advancement of Science academic journals Monthly magazines published in the United States Science and technology magazines published in the United States Defunct magazines published in the United States Magazines established in 1915 Magazines disestablished in 1957 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New York Times
''The New York Times'' (''the Times'', ''NYT'', or the Gray Lady) is a daily newspaper based in New York City with a worldwide readership reported in 2020 to comprise a declining 840,000 paid print subscribers, and a growing 6 million paid digital media, digital subscribers. It also is a producer of popular podcasts such as ''The Daily (podcast), The Daily''. Founded in 1851 by Henry Jarvis Raymond and George Jones (publisher), George Jones, it was initially published by Raymond, Jones & Company. The ''Times'' has won List of Pulitzer Prizes awarded to The New York Times, 132 Pulitzer Prizes, the most of any newspaper, and has long been regarded as a national "newspaper of record". For print it is ranked List of newspapers by circulation, 18th in the world by circulation and List of newspapers in the United States, 3rd in the U.S. The paper is owned by the New York Times Company, which is Public company, publicly traded. It has been governed by the Sulzberger family since 189 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Globe And Mail
''The Globe and Mail'' is a Canadian newspaper printed in five cities in western and central Canada. With a weekly readership of approximately 2 million in 2015, it is Canada's most widely read newspaper on weekdays and Saturdays, although it falls slightly behind the ''Toronto Star'' in overall weekly circulation because the ''Star'' publishes a Sunday edition, whereas the ''Globe'' does not. ''The Globe and Mail'' is regarded by some as Canada's " newspaper of record". ''The Globe and Mail''s predecessors, '' The Globe'' and ''The Mail and Empire'' were both established in the 19th century. The former was established in 1844, while the latter was established in 1895 through a merger of ''The Toronto Mail'' and the ''Toronto Empire''. In 1936, ''The Globe'' and ''The Mail and Empire'' merged to form ''The Globe and Mail''. The newspaper was acquired by FP Publications in 1965, who later sold the paper to the Thomson Corporation in 1980. In 2001, the paper merged with broadcast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manhattan Project
The Manhattan Project was a research and development undertaking during World War II that produced the first nuclear weapons. It was led by the United States with the support of the United Kingdom and Canada. From 1942 to 1946, the project was under the direction of Major General Leslie Groves of the United States Army Corps of Engineers, U.S. Army Corps of Engineers. Nuclear physicist Robert Oppenheimer was the director of the Los Alamos Laboratory that designed the actual bombs. The Army component of the project was designated the Manhattan District as its first headquarters were in Manhattan; the placename gradually superseded the official codename, Development of Substitute Materials, for the entire project. Along the way, the project absorbed its earlier British counterpart, Tube Alloys. The Manhattan Project began modestly in 1939, but grew to employ more than 130,000 people and cost nearly US$2 billion (equivalent to about $ billion in ). Over 90 percent of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atomic Weapon
A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or a combination of fission and fusion reactions ( thermonuclear bomb), producing a nuclear explosion. Both bomb types release large quantities of energy from relatively small amounts of matter. The first test of a fission ("atomic") bomb released an amount of energy approximately equal to . The first thermonuclear ("hydrogen") bomb test released energy approximately equal to . Nuclear bombs have had yields between 10 tons TNT (the W54) and 50 megatons for the Tsar Bomba (see TNT equivalent). A thermonuclear weapon weighing as little as can release energy equal to more than . A nuclear device no larger than a conventional bomb can devastate an entire city by blast, fire, and radiation. Since they are weapons of mass destruction, the proliferation of nuclear weapons is a focus of international relations policy. Nuclear weapons have been deplo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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