|
Yerkes 40 Inch Refractor Telescope-1897
Yerkes may refer to: *Yerkes (surname), notable people with this surname *Yerkes, Kentucky *Yerkes, Pennsylvania * Yerkes Observatory, an astronomical observatory of the University of Chicago ** Yerkes luminosity classification of stars ** Yerkes scheme of galaxy morphological classification * Yerkes National Primate Research Center, one of eight national primate research centers funded by the National Institutes of Health, located in Atlanta, Georgia at Emory University * Yerkes–Dodson law, an empirical relationship between arousal and performance first noted by Robert M. Yerkes and John Dillingham Dodson * 990 Yerkes 990 Yerkes is a main belt asteroid discovered by Belgian-American astronomer George Van Biesbroeck in 1922, and named after the Yerkes Observatory. Photometry (astronomy), Photometric observations of this asteroid collected during 2009 show a ro ..., main belt asteroid * Yerkes (crater), on the moon {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yerkes (surname)
Yerkes is a surname. Notable people with the surname include: * Bob Yerkes (born Brayton Walter Yerkes; born 1932), American stuntman *Carroll Yerkes (1903–1950), American baseball pitcher *Charles Yerkes (1837–1905), American financier and art collector involved with developing mass-transit systems *Harry Yerkes (1872–1954), American marimba player, inventor, and recording manager *Mary Agnes Yerkes (1886–1989), American Impressionist painter, photographer, and artisan *Robert Yerkes (1876–1956), American psychologist, ethologist, and primatologist *Royden Yerkes (1881–1964), American Episcopal priest and theologian *Stan Yerkes (1874–1940), American baseball pitcher *Steve Yerkes (1888–1971), American baseball player See also * Yerkes (other) *Merritt Yerkes Hughes (1893–1971), American professor and expert in French, English, and Italian literature *Tracy Yerkes Thomas Tracy Yerkes Thomas (1899–1983) was an American mathematician. Biography Thomas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yerkes, Kentucky
Yerkes is an unincorporated community and coal town in Perry County, Kentucky Kentucky ( , ), officially the Commonwealth of Kentucky, is a state in the Southeastern region of the United States and one of the states of the Upper South. It borders Illinois, Indiana, and Ohio to the north; West Virginia and Virginia to ..., United States. References Unincorporated communities in Perry County, Kentucky Unincorporated communities in Kentucky Coal towns in Kentucky {{PerryCountyKY-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yerkes, Pennsylvania
Yerkes is an unincorporated village in Upper Providence Township, Montgomery County, Pennsylvania, United States, just southwest of Collegeville. Yerkes is at a former road crossing of the Perkiomen Creek Perkiomen Creek is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed April 1, 2011 tributary of the Schuylkill River in Berks, Lehigh and Montgomery counties, Pennsylvania.Gertler, Edw .... References Unincorporated communities in Montgomery County, Pennsylvania Unincorporated communities in Pennsylvania {{MontgomeryCountyPA-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yerkes Observatory
Yerkes Observatory ( ) is an astronomical observatory located in Williams Bay, Wisconsin, United States. The observatory was operated by the University of Chicago Department of Astronomy and Astrophysics from its founding in 1897 to 2018. Ownership was transferred to the non-profit Yerkes Future Foundation (YFF) in May 2020, which began restoration and renovation of the historic building and grounds. Re-opening for public tours and programming began May 27, 2022. The observatory, often called "the birthplace of modern astrophysics," was founded in 1892 by astronomer George Ellery Hale and financed by businessman Charles T. Yerkes. It represented a shift in the thinking about observatories, from their being mere housing for telescopes and observers, to the early-20th-century concept of observation equipment integrated with laboratory space for physics and chemistry analysis. The observatory's main dome houses a doublet lens refracting telescope, the largest refractor ever ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yerkes Luminosity Classification
In astronomy, stellar classification is the classification of stars based on their spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colors interspersed with spectral lines. Each line indicates a particular chemical element or molecule, with the line strength indicating the abundance of that element. The strengths of the different spectral lines vary mainly due to the temperature of the photosphere, although in some cases there are true abundance differences. The ''spectral class'' of a star is a short code primarily summarizing the ionization state, giving an objective measure of the photosphere's temperature. Most stars are currently classified under the Morgan–Keenan (MK) system using the letters ''O'', ''B'', ''A'', ''F'', ''G'', ''K'', and ''M'', a sequence from the hottest (''O'' type) to the coolest (''M'' type). Each letter class is then subdivided ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galaxy Morphological Classification
Galaxy morphological classification is a system used by astronomers to divide galaxies into groups based on their visual appearance. There are several schemes in use by which galaxies can be classified according to their morphologies, the most famous being the Hubble sequence, devised by Edwin Hubble and later expanded by Gérard de Vaucouleurs and Allan Sandage. However, galaxy classification and morphology are now largely done using computational methods and physical morphology. Hubble sequence The Hubble sequence is a morphological classification scheme for galaxies invented by Edwin Hubble in 1926. It is often known colloquially as the “Hubble tuning-fork” because of the shape in which it is traditionally represented. Hubble's scheme divides galaxies into three broad classes based on their visual appearance (originally on photographic plates): * Elliptical galaxies have smooth, featureless light distributions and appear as ellipses in images. They are denoted by the l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yerkes National Primate Research Center
The Emory National Primate Research Center (formerly known as Yerkes National Primate Research Center) located in Atlanta, Georgia, owned by Emory University, is a center of biomedical and behavioral research, is dedicated to improving human and animal health, and is the oldest of seven National Primate Research Centers partially funded by the National Institutes of Health. It is known for its nationally and internationally recognized biomedical and behavioral studies with nonhuman primates by Emory University. Its Main Station contains most of the center's biomedical research laboratories. The center also includes the Living Links Center and the Field Station near Lawrenceville, Georgia. History The center was established in 1930 by Robert Yerkes, in Orange Park, Florida, associated then with Yale University. Yerkes was a pioneering primatologist who specialized in comparative psychology. In 1965, it relocated to its location on the campus of Emory University. In April 2022 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yerkes–Dodson Law
The Yerkes–Dodson law is an empirical relationship between pressure and performance, originally developed by psychologists Robert M. Yerkes and John Dillingham Dodson in 1908. The law dictates that performance increases with physiological or mental arousal, but only up to a point. When levels of arousal become too high, performance decreases. The process is often illustrated graphically as a bell-shaped curve which increases and then decreases with higher levels of arousal. The original paper (a study of Japanese dancing mice) was only referenced ten times over the next half century, yet in four of the citing articles, these findings were described as a psychological "law". Levels of arousal Researchers have found that different tasks require different levels of arousal for optimal performance. For example, difficult or intellectually demanding tasks may require a lower level of arousal (to facilitate concentration), whereas tasks demanding stamina or persistence may be per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
990 Yerkes
990 Yerkes is a main belt asteroid discovered by Belgian-American astronomer George Van Biesbroeck in 1922, and named after the Yerkes Observatory. Photometry (astronomy), Photometric observations of this asteroid collected during 2009 show a rotation period of 24.45 ± 0.05 hours with a brightness variation of 0.35 ± 0.05 Magnitude (astronomy), magnitude. References External links * * Background asteroids, 000990 Discoveries by George Van Biesbroeck Named minor planets Astronomical objects discovered in 1922, 19221123 {{beltasteroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
