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Harlan True Stetson
Harlan True Stetson FRAS (28 June 1885–14 October 1964) was an American astronomer and physicist. He earned a B.S. from Brown University in 1912, a M.A. from Dartmouth College, then a Ph.D. at Harvard University in 1915. His thesis was titled, ''On an Apparatus and Method for Thermo-Electric Measurements for Photographic Photometry''. Stetson joined Dartmouth in 1918 to teach physics, then moved to Harvard where he taught astronomy until 1929. He then became the director of the Perkins Observatory in Delaware, Ohio. Stetson is an honorary member of Sigma Pi Sigma. In 1936 he joined the Massachusetts Institute of Technology. He directed the MIT Cosmic Terrestrial Research Laboratory from 1940 until 1950, and performed research into the relationship between the cosmos and the Earth. His studies included sunspots, the Earth's crust, and the propagation of radio waves. The crater Stetson Stetson is an American brand of hat manufactured by the John B. Stetson Company. " ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brackets
A bracket is either of two tall fore- or back-facing punctuation marks commonly used to isolate a segment of text or data from its surroundings. They come in four main pairs of shapes, as given in the box to the right, which also gives their names, that vary between British English, British and American English. "Brackets", without further qualification, are in British English the ... marks and in American English the ... marks. Other symbols are repurposed as brackets in specialist contexts, such as International Phonetic Alphabet#Brackets and transcription delimiters, those used by linguists. Brackets are typically deployed in symmetric pairs, and an individual bracket may be identified as a "left" or "right" bracket or, alternatively, an "opening bracket" or "closing bracket", respectively, depending on the Writing system#Directionality, directionality of the context. In casual writing and in technical fields such as computing or linguistic analysis of grammar, brackets ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perkins Observatory
Perkins Observatory is an astronomical observatory in Delaware, Ohio, United States. It is owned and operated by Ohio Wesleyan University. In 1931 it had the third largest telescope in the World; the 69 inch aperture Perkins telescope came online at this observatory. The mirror was the largest cast in the United States up to that time, and it was made by the United States National Bureau of Standards. In the 1930s this observatory also started periodic document release called '' The Telescope,'' featuring results from the telescope but grew to include other astronomical information. The University partnered with Ohio State University in 1935, to help run the big telescope and the agreement lasted for almost seven decades. In the 1960s the telescope was moved to Arizona, USA for better viewing conditions, and fitted with new larger mirror. Nevertheless, the Observatory continued to be a hub of astronomical activity in the region and for the University. In the 21st century the O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvard University Alumni
The list of Harvard University alumni includes notable graduates, professors, and administrators affiliated with Harvard University. For a list of notable non-graduates of Harvard, see the list of Harvard University non-graduate alumni. For a list of Harvard's presidents, see President of Harvard University. Eight Presidents of the United States have graduated from Harvard University: John Adams, John Quincy Adams, Rutherford B. Hayes, John F. Kennedy, Franklin Delano Roosevelt, Theodore Roosevelt, George W. Bush, and Barack Obama. Bush graduated from Harvard Business School, Hayes and Obama from Harvard Law School, and the others from Harvard College. Over 150 Nobel Prize winners have been associated with the university as alumni, researchers or faculty. Nobel laureates Pulitzer Prize winners ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dartmouth College Alumni
This list of alumni of Dartmouth College includes alumni and current students of Dartmouth College and its graduate schools. In addition to its undergraduate program, Dartmouth offers graduate degrees in nineteen departments and includes three graduate schools: the Tuck School of Business, the Thayer School of Engineering, and Dartmouth Medical School. Since its founding in 1769, Dartmouth has graduated classes of students and today has approximately 66,500 living alumni. This list uses the following notation: * D or unmarked years – recipient of Dartmouth College Bachelor of Arts * DMS – recipient of Dartmouth Medical School degree ( Bachelor of Medicine 1797–1812, Doctor of Medicine 1812–present) * Th – recipient of any of several Thayer School of Engineering degrees (see Thayer School of Engineering#Academics) * T – recipient of Tuck School of Business Master of Business Administration, or graduate of other programs as indicated * M.A., M.A.L.S., M.S., ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brown University Alumni
Brown is a color. It can be considered a composite color, but it is mainly a darker shade of orange. In the CMYK color model used in printing and painting, brown is usually made by combining the colors orange and black. In the RGB color model used to project colors onto television screens and computer monitors, brown combines red and green. The color brown is seen widely in nature, wood, soil, human hair color, eye color and skin pigmentation. Brown is the color of dark wood or rich soil. In the RYB color model, brown is made by mixing the three primary colors, red, yellow, and blue. According to public opinion surveys in Europe and the United States, brown is the least favorite color of the public; it is often associated with fecal matter, plainness, the rustic, although it does also have positive associations, including baking, warmth, wildlife, the autumn and music. Etymology The term is from Old English , in origin for any dusky or dark shade of color. The first r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1964 Deaths
Events January * January 1 – The Federation of Rhodesia and Nyasaland is dissolved. * January 5 – In the first meeting between leaders of the Roman Catholic and Orthodox churches since the fifteenth century, Pope Paul VI and Patriarch Athenagoras I of Constantinople meet in Jerusalem. * January 6 – A British firm, the Leyland Motor Corp., announces the sale of 450 buses to the Cuban government, challenging the United States blockade of Cuba. * January 9 – ''Martyrs' Day (Panama), Martyrs' Day'': Armed clashes between United States troops and Panamanian civilians in the Panama Canal Zone precipitate a major international crisis, resulting in the deaths of 21 Panamanians and 4 U.S. soldiers. * January 11 – United States Surgeon General Luther Terry reports that smoking may be hazardous to one's health (the first such statement from the U.S. government). * January 22 – Kenneth Kaunda is inaugurated as the first Prime Minister of Northern Rhodesia. * January ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1885 Births
Events January * January 3– 4 – Sino-French War – Battle of Núi Bop: French troops under General Oscar de Négrier defeat a numerically superior Qing Chinese force, in northern Vietnam. * January 17 – Mahdist War in Sudan – Battle of Abu Klea: British troops defeat Mahdist forces. * January 20 – American inventor LaMarcus Adna Thompson patents a roller coaster. * January 24 – Irish rebels damage Westminster Hall and the Tower of London with dynamite. * January 26 – Mahdist War in Sudan: Troops loyal to Mahdi Muhammad Ahmad conquer Khartoum; British commander Charles George Gordon is killed. February * February 5 – King Leopold II of Belgium establishes the Congo Free State, as a personal possession. * February 9 – The first Japanese arrive in Hawaii. * February 16 – Charles Dow publishes the first edition of the Dow Jones Industrial Average. The index stands at a level of 62.76, and r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stetson (crater)
Stetson is the remains of a crater on the far side of the Moon. The northeastern part of the rim of Stetson has been overlain by the larger crater Blackett. Lying across the eastern rim is a double-crater formation consisting of the satellites Stetson E and Stetson G. There are also small craters along the southeast and northwestern rims. Only the portion of the rim that is still relatively intact is from the west-northwest counter-clockwise to the south. The surviving rim and the remaining interior floor are relatively indistinct, possibly due to deposits of ejecta from the Mare Orientale impact basin to the northeast. Radial streaks of ejecta Ejecta (; ) are particles ejected from an area. In volcanology, in particular, the term refers to particles including pyroclastic rock, pyroclastic materials (tephra) that came out of a explosive eruption, volcanic explosion and magma eruption v ... and secondary craters cover the terrain that surrounds Stetson and Blackett. Satelli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Massachusetts Institute Of Technology
The Massachusetts Institute of Technology (MIT) is a Private university, private research university in Cambridge, Massachusetts, United States. Established in 1861, MIT has played a significant role in the development of many areas of modern technology and science. In response to the increasing Technological and industrial history of the United States, industrialization of the United States, William Barton Rogers organized a school in Boston to create "useful knowledge." Initially funded by a land-grant universities, federal land grant, the institute adopted a Polytechnic, polytechnic model that stressed laboratory instruction in applied science and engineering. MIT moved from Boston to Cambridge in 1916 and grew rapidly through collaboration with private industry, military branches, and new federal basic research agencies, the formation of which was influenced by MIT faculty like Vannevar Bush. In the late twentieth century, MIT became a leading center for research in compu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sigma Pi Sigma
Sigma Pi Sigma () is an American honor society for physics and astronomy. It was founded at Davidson College in Davidson, North Carolina on December 11, 1921. It is the oldest and only American honor society for physics and astronomy. It is an organization within the Society of Physics Students and the American Institute of Physics. It is a member of the Association of College Honor Societies. History Academic fraternity Sigma Pi Sigma was founded by a group of ten students and faculty members at Davidson College on December 11, 1921, as an academic fraternity. It was the first in the United States specifically dedicated to the study of physics. Historically, it was associated with Gamma Sigma Epsilon, another academic fraternity founded in 1919 by Davidson students interested in chemistry. Its first president was J.K. Price. The first major expansion of Sigma Pi Sigma occurred in 1925 when a second chapter was founded at Duke University. Three years later, in 1928, the soci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Delaware, Ohio
Delaware is a city in Delaware County, Ohio, United States, and its county seat. It is located near the center of Ohio, about north of Columbus as part of the Columbus metropolitan area. The population was 41,302 at the 2020 census. Delaware was founded in 1808 and was incorporated in 1816. History While the city and county of Delaware are named for the Delaware tribe, the city of Delaware itself was founded on a Mingo village called Pluggy's Town. The first recorded settler was Joseph Barber in 1807. Shortly afterward, other men started settling in the area (according to the Delaware Historical Society); namely: Moses Byxbe, William Little, Solomon Smith, Elder Jacob Drake, Thomas Butler, and Ira Carpenter. In 1808, Moses Byxbe built the first framed house on William Street. Born in Delaware County in 1808, Charles Sweetser went on to become a member of the United States House of Representatives from 1849 to 1853. On March 11, 1808, a plan of the city was filed, marking ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physics
Physics is the scientific study of matter, its Elementary particle, fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which relates to the order of nature, or, in other words, to the regular succession of events." It is one of the most fundamental scientific disciplines. "Physics is one of the most fundamental of the sciences. Scientists of all disciplines use the ideas of physics, including chemists who study the structure of molecules, paleontologists who try to reconstruct how dinosaurs walked, and climatologists who study how human activities affect the atmosphere and oceans. Physics is also the foundation of all engineering and technology. No engineer could design a flat-screen TV, an interplanetary spacecraft, or even a better mousetrap without first understanding the basic laws of physics. (...) You will come to see physics as a towering achievement of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
