|
Wilder Dwight Bancroft
Wilder Dwight Bancroft (October 1, 1867 – February 7, 1953) was an American physical chemist. Biography Born in Middletown, Rhode Island, he was the grandson of historian and statesman George Bancroft and great-grandson of Aaron Bancroft. He received a B.A. from Harvard University in 1888, and a Ph.D. from University of Leipzig in 1892, as well as honorary SCDs from Lafayette College (in 1919) and Cambridge University (in 1923). He was an assistant chemistry instructor at Harvard University from 1888–1889 and 1893–1894, then a full instructor from 1894-1895. He then became an assistant professor at Cornell University in 1895, then a full professor (at Cornell) in 1903. He was elected a Fellow of the American Academy of Arts and Sciences in 1913, a Member of the American Philosophical Society in 1920, and was elected to the National Academy of Sciences in 1920. Bancroft was trained by Wilhelm Ostwald and Jacobus Henricus van 't Hoff, and introduced a number of ther ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Philosophical Society
The American Philosophical Society (APS) is an American scholarly organization and learned society founded in 1743 in Philadelphia that promotes knowledge in the humanities and natural sciences through research, professional meetings, publications, source text, library resources, and community outreach. It was founded by the polymath Benjamin Franklin and is considered the first learned society founded in what became the United States.Philosophical Hall, the society's headquarters and a museum, is located just east of Independence Hall in Independence National Historical Park. In 1965, in recognition of the building's history, it was designated a National Historic Landmark. The society has about 1,000 elected members. As of April 2020, 5,710 members had been inducted since its creation. Through research grants, published journals, the American Philosophical Society Museum, an extensive library, and regular meetings, the society supports a variety of disciplines in the humanitie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvard College 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] |
Fellows Of The American Academy Of Arts And Sciences
Fellows may refer to Fellow, in plural form. Fellows or Fellowes may also refer to: Places *Fellows, California, USA *Fellows, Wisconsin, ghost town, USA Other uses *Fellowes, Inc., manufacturer of workspace products *Fellows, a partner in the firm of English canal carriers, Fellows Morton & Clayton *Fellows (surname) *Mount Fellows, a mountain in Alaska See also *North Fellows Historic District, listed on the National Register of Historic Places in Wapello County, Iowa *Justice Fellows (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cornell University Faculty
This list of Cornell University faculty includes notable current and former instructors and administrators of Cornell University, an Ivy League university located in Ithaca, New York. Nobel laureates Chemistry * Peter Debye (Professor of Chemistry, 1940–50; Department Chair) — Chemistry 1936; National Medal of Science (1965) * Manfred Eigen (A.D. White Professor-at-Large, 1965–76) — Chemistry 1967 * Richard R. Ernst (A.D. White Professor-at-Large, 1996-2002) — Chemistry 1991 * Paul Flory (Chemistry faculty, 1948–57) — Chemistry 1974; National Medal of Science (1974) * Otto Hahn (George Fisher Baker Lecturer of Chemistry, 1933) — Chemistry 1944 * Gerhard Herzberg (George Fischer Baker Non-Resident Lecturer in Chemistry 1968) — Chemistry 1971 * Roald Hoffmann (Frank H.T. Rhodes Professor in Humane Letters) — Chemistry 1981; National Medal of Science (1983) * Linus Pauling (George Fischer Baker Non-Resident Lecturer in Chemistry 1937-1938; Messenger Lect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1953 Deaths
Events January * January 6 – The Asian Socialist Conference opens in Rangoon, Burma. * January 12 – Estonian émigrés found a Estonian government-in-exile, government-in-exile in Oslo. * January 14 ** Marshal Josip Broz Tito is chosen President of Socialist Federal Republic of Yugoslavia, Yugoslavia. ** The Central Intelligence Agency, CIA-sponsored Robertson Panel first meets to discuss the Unidentified flying object, UFO phenomenon. * January 15 ** Georg Dertinger, foreign minister of East Germany, is arrested for spying. ** British security forces in West Germany arrest 7 members of the Naumann Circle, a clandestine Neo-Nazi organization. * January 19 – 71.1% of all television sets in the United States are tuned into ''I Love Lucy'', to watch Lucy give birth to Little Ricky, which is more people than those who tune into Dwight Eisenhower's inauguration the next day. This record is never broken. * January 24 ** Mau Mau Uprising: Rebels in Kenya kill th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1867 Births
There were only 354 days this year in the newly purchased territory of Alaska. When the territory transferred from the Russian Empire to the United States, the calendric transition from the Julian to the Gregorian Calendar was made with only 11 days instead of 12 during the 19th century. This change was made due to the territorial and Geopolitics, geopolitical shift from the Asian to the American side of the International Date Line. Friday, 6 October 1867 ''(Julian Calendar)'' was followed by Friday again on 18 October 1867 (instead of Saturday, 19 October 1867 in the Gregorian Calendar). Events January * January 1 – The John A. Roebling Suspension Bridge, Covington–Cincinnati Suspension Bridge opens between Cincinnati, Ohio, and Covington, Kentucky, in the United States, becoming the longest single-span bridge in the world. It was renamed after its designer, John A. Roebling, in 1983. * January 8 – African-American men are granted the right to vote in the District ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bancroft Point
A Bancroft point is the temperature where an azeotrope occurs in a binary system. Although vapor liquid azeotropy is impossible for binary systems which are rigorously described by Raoult's law, for real systems, azeotropy is inevitable at temperatures where the saturation vapor pressure of the components are equal. Such a temperature is called a Bancroft point. However, not all azeotropic binary systems exhibit such a point. Also, a Bancroft point must lie in the valid temperature ranges of the Antoine equation. Bancroft point is named after Wilder Dwight Bancroft. See also * Raoult's law * Vapor–liquid equilibrium * Bancroft rule The Bancroft rule in colloidal chemistry states: "The phase (matter), phase in which an emulsifier is more soluble constitutes the continuous phase." This means that water-soluble surfactants tend to give oil-in-water emulsions and oil-soluble sur ... External links Separation of Azeotropic Mixtures Phase transitions Thermodynamics Distillation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melvin Lorrel Nichols
Melvin Lorrel "Pete" Nichols (November 30, 1894 – March 29, 1981) was an American chemistry professor and author. Early life Nichols was born in Dayton, Ohio, the son of Joseph Wiseman Nichols, a cabinetmaker, and Sarah Rebecca Heidelbaugh. He was the youngest of six children. Career Nichols was awarded his PhD from Cornell University in 1922. His thesis was “Dinitrosoresorcinol as a reagent for the quantitative determination of cobalt in the presence of nickel and other metals of the third group”. He was awarded a Guggenheim Fellowship Guggenheim Fellowships are Grant (money), grants that have been awarded annually since by the John Simon Guggenheim Memorial Foundation, endowed by the late Simon Guggenheim, Simon and Olga Hirsh Guggenheim. These awards are bestowed upon indiv ... in Chemistry in 1929. Nichols was on the faculty at Cornell University from 1923 to 1962, rising to become Emeritus Professor of Chemistry. “Pete” Nichols' wrote two textbooks on analyti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bancroft (crater)
Bancroft is a small, bowl-shaped impact crater located to the southwest of Archimedes (crater), Archimedes on the Mare Imbrium. A wide, shallow depression runs from the rim of Bancroft southeast to the Montes Archimedes. There are some clefts at the edge of the Lunar mare, mare to the west and southwest of the crater. Other prominent craters are two small craters nearly to the west named Feuillée (crater), Feuillée and Beer (lunar crater), Beer. Bancroft has a linear ridge in the center of its floor, which is unusual for a crater of 13 km diameter. It was named after American chemist Wilder Dwight Bancroft, Wilder D. Bancroft. Bancroft was previously identified as Archimedes A before being renamed by the International Astronomical Union, IAU in 1976. References * * * * * * * * * * * External links * Impact craters on the Moon Mare Imbrium {{Craters on the Moon: A–B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bancroft Rule
The Bancroft rule in colloidal chemistry states: "The phase (matter), phase in which an emulsifier is more soluble constitutes the continuous phase." This means that water-soluble surfactants tend to give oil-in-water emulsions and oil-soluble surfactants give water-in-oil emulsions. It is a general rule of thumb, still used, but regarded as inferior to HLD theory (Hydrophilic Lipophilic Difference), which takes many more factors into consideration. It was named after Wilder Dwight Bancroft, an American physical chemist, who proposed the rule in the 1910s. Technical details In all of the typical emulsions, there are tiny particles (discrete phase) suspended in a liquid (continuous phase). In an oil-in-water emulsion, oil is the discrete phase, while water is the continuous phase. What the Bancroft rule states is that contrary to common sense, what makes an emulsion oil-in-water or water-in-oil is not the relative percentages of oil or water, but which phase the emulsifier is mor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physicochemistry
Physical chemistry is the study of macroscopic and microscopic phenomena in chemical systems in terms of the principles, practices, and concepts of physics such as motion, energy, force, time, thermodynamics, quantum chemistry, statistical mechanics, analytical dynamics and chemical equilibria. Physical chemistry, in contrast to chemical physics, is predominantly (but not always) a supra-molecular science, as the majority of the principles on which it was founded relate to the bulk rather than the molecular or atomic structure alone (for example, chemical equilibrium and colloids). Some of the relationships that physical chemistry strives to understand include the effects of: # Intermolecular forces that act upon the physical properties of materials (plasticity, tensile strength, surface tension in liquids). # Reaction kinetics on the rate of a reaction. # The identity of ions and the electrical conductivity of materials. # Surface science and electrochemistry of cell membranes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
