|
Arthur Amos Noyes
Arthur Amos Noyes (September 13, 1866 – June 3, 1936) was an American chemist, inventor and educator, born in Newburyport, Massachusetts, son of Amos and Anna Page Noyes, née Andrews. He received a PhD in 1890 from Leipzig University under the guidance of Wilhelm Ostwald. He served as the acting president of MIT between 1907 and 1909 and as professor of chemistry at the California Institute of Technology from 1919 to 1936. "Although he Noyeslaboratory at MIT was like an institute in its intramural funding (from Carnegie Institute of Washington and Noyes's patent royalties), Noyes recruited many of his disciples as undergraduates and took a deep interest in undergraduate engineering education, both at MIT and later at Caltech. Roscoe Gilkey Dickinson was one of his famous students. Noyes was a major influence both on the educational philosophy of the core curriculum of Caltech as well as in the negotiations leading to the creation of the National Research Council alon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newburyport, Massachusetts
Newburyport is a coastal city in Essex County, Massachusetts, United States, northeast of Boston. The population was 18,289 at the 2020 United States census, 2020 census. A historic seaport with a vibrant tourism industry, Newburyport includes part of Plum Island (Massachusetts), Plum Island. The mooring, winter storage, and maintenance of recreational boats, motor and sail, still contribute a large part of the city's income. A United States Coast Guard, Coast Guard station oversees boating activity, especially in the sometimes dangerous tidal currents of the Merrimack River. At the edge of the Newbury Marshes, delineating Newburyport to the south, an industrial park provides a wide range of jobs. Newburyport is on a major north–south highway, Interstate 95 in Massachusetts, Interstate 95. The outer circumferential highway of Boston, Interstate 495 (Massachusetts), Interstate 495, passes nearby in Amesbury, Massachusetts, Amesbury. The Newburyport Turnpike (U.S. Route 1 in Mass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California Institute Of Technology
The California Institute of Technology (branded as Caltech) is a private research university in Pasadena, California, United States. The university is responsible for many modern scientific advancements and is among a small group of institutes of technology in the United States that are devoted to the instruction of pure and applied sciences. The institution was founded as a preparatory and vocational school by Amos G. Throop in 1891 and began attracting influential scientists such as George Ellery Hale, Arthur Amos Noyes, and Robert Andrews Millikan in the early 20th century. The vocational and preparatory schools were disbanded and spun off in 1910, and the college assumed its present name in 1920. In 1934, Caltech was elected to the Association of American Universities, and the antecedents of NASA's Jet Propulsion Laboratory, which Caltech continues to manage and operate, were established between 1936 and 1943 under Theodore von Kármán. Caltech has six academic divisi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solvent
A solvent (from the Latin language, Latin ''wikt:solvo#Latin, solvō'', "loosen, untie, solve") is a substance that dissolves a solute, resulting in a Solution (chemistry), solution. A solvent is usually a liquid but can also be a solid, a gas, or a supercritical fluid. Water is a solvent for Chemical polarity#Polarity of molecules, polar molecules, and the most common solvent used by living things; all the ions and proteins in a Cell (biology), cell are dissolved in water within the cell. Major uses of solvents are in paints, paint removers, inks, and dry cleaning. Specific uses for Organic compound, organic solvents are in dry cleaning (e.g. tetrachloroethylene); as paint thinners (toluene, turpentine); as nail polish removers and solvents of glue (acetone, methyl acetate, ethyl acetate); in spot removers (hexane, petrol ether); in detergents (D-limonene, citrus terpenes); and in perfumes (ethanol). Solvents find various applications in chemical, pharmaceutical, oil, and gas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solvation
Solvations describes the interaction of a solvent with dissolved molecules. Both ionized and uncharged molecules interact strongly with a solvent, and the strength and nature of this interaction influence many properties of the solute, including solubility, reactivity, and color, as well as influencing the properties of the solvent such as its viscosity and density. If the attractive forces between the solvent and solute particles are greater than the attractive forces holding the solute particles together, the solvent particles pull the solute particles apart and surround them. The surrounded solute particles then move away from the solid solute and out into the solution. Ions are surrounded by a concentric shell of solvent. Solvation is the process of reorganizing solvent and solute molecules into solvation complexes and involves bond formation, hydrogen bonding, and van der Waals forces. Solvation of a solute by water is called hydration. Solubility of solid compounds dep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rate (mathematics)
In mathematics, a rate is the quotient of two quantities, often represented as a fraction. If the divisor (or fraction denominator) in the rate is equal to one expressed as a single unit, and if it is assumed that this quantity can be changed systematically (i.e., is an independent variable), then the dividend (the fraction numerator) of the rate expresses the corresponding rate of change in the other ( dependent) variable. In some cases, it may be regarded as a change to a value, which is caused by a change of a value in respect to another value. For example, acceleration is a change in velocity with respect to time ''Temporal rate'' is a common type of rate ("per unit of time"), such as speed, heart rate, and flux. In fact, often ''rate'' is a synonym of rhythm or frequency, a count per second (i.e., hertz); e.g., radio frequencies or sample rates. In describing the units of a rate, the word "per" is used to separate the units of the two measurements used to calculate th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equation
In mathematics, an equation is a mathematical formula that expresses the equality of two expressions, by connecting them with the equals sign . The word ''equation'' and its cognates in other languages may have subtly different meanings; for example, in French an ''équation'' is defined as containing one or more variables, while in English, any well-formed formula consisting of two expressions related with an equals sign is an equation. Solving an equation containing variables consists of determining which values of the variables make the equality true. The variables for which the equation has to be solved are also called unknowns, and the values of the unknowns that satisfy the equality are called solutions of the equation. There are two kinds of equations: identities and conditional equations. An identity is true for all values of the variables. A conditional equation is only true for particular values of the variables. The " =" symbol, which appears in every equati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Willis Rodney Whitney
Willis Rodney Whitney (August 22, 1868 – January 9, 1958) was an American chemist and founder of the research laboratory of the General Electric Company. He is known as the "father of industrial research" in the United States for blending the worlds of research and industry together; which at the time, were two very distinct careers. He is also known for his corrosion theory of iron which he developed after studying at M.I.T. and the University of Leipzig. Whitney was also a professor at M.I.T. for some time before his career transition into research directing. He received many awards, including the Willard Gibbs medal, the Franklin medal, the Perkin medal, the Edison medal, the John Fritz medal, the Chandler medal, and many others. He was an astute believer in researching and experimenting for pleasure and voiced his belief at various science conferences. Personal life Whitney was born in Jamestown, New York, the son of John Jay Whitney and Agnes (''nee'' Reynolds) Whitn ... [...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] |
National Academy Of Sciences
The National Academy of Sciences (NAS) is a United States nonprofit, NGO, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the National Academy of Medicine (NAM). As a national academy, new members of the organization are elected annually by current members, based on their distinguished and continuing achievements in original research. Election to the National Academy is one of the highest honors in the scientific field in the United States. Member of the National Academy of Sciences, Members of the National Academy of Sciences serve ''pro bono'' as "advisers to the nation" on science, engineering, and medicine. The group holds a congressional charter under Title 36 of the United States Code. Congress legislated and President Abraham Lincoln signed an Act of Congress (1863) establishing the National Academy of Sciences as an independent, trusted nongovernmen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Academy Of Arts And Sciences
The American Academy of Arts and Sciences (The Academy) is one of the oldest learned societies in the United States. It was founded in 1780 during the American Revolution by John Adams, John Hancock, James Bowdoin, Andrew Oliver, and other Founding Fathers of the United States. It is headquartered in Cambridge, Massachusetts. Membership in the academy is achieved through a nominating petition, review, and election process. The academy's quarterly journal, '' Dædalus'', is published by the MIT Press on behalf of the academy, and has been open-access since January 2021. The academy also conducts multidisciplinary public policy research. Laurie L. Patton has served as President of the Academy since January 2025. History The Academy was established by the Massachusetts legislature on May 4, 1780, charted in order "to cultivate every art and science which may tend to advance the interest, honor, dignity, and happiness of a free, independent, and virtuous people." The sixty-tw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Society For Science & The Public
Society for Science, formerly known as Science Service and later Society for Science and the Public, is a 501(c)(3) non-profit organization dedicated to the promotion of science, through its science education programs and publications, including the bi-weekly ''Science News'' magazine and ''Science News Explores''. The organization is headquartered in the Dupont Circle neighborhood of Washington, D.C. Founded as Science Service in 1921, the Society for Science has been dedicated to expanding scientific literacy, access to STEM education and scientific research for more than 100 years. In pursuit of this goal, it publishes two magazines: ''Science News'' and ''Science News Explores'' (formerly ''Science News for Students''), and manages student science fair events including the International Science and Engineering Fair, the Regeneron Science Talent Search (previously known as the Westinghouse Science Talent Search, the oldest and longest running science fair competition in the U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Andrews Millikan
Robert Andrews Millikan ( ; March 22, 1868 – December 19, 1953) was an American physicist who received the Nobel Prize in Physics in 1923 "for his work on the elementary charge of electricity and on the photoelectric effect". Millikan graduated from Oberlin College in 1891 and obtained his doctorate at Columbia University in 1895. In 1896, he became an assistant at the University of Chicago, where he became a full professor in 1910. In 1909, Millikan began a series of experiments to determine the electric charge carried by a single electron. He began by measuring the course of charged water droplets in an electric field. The results suggested that the charge on the droplets is a multiple of the elementary electric charge, but the experiment was not accurate enough to be convincing. He obtained more precise results in 1910 with his Oil drop experiment, oil-drop experiment in which he replaced water (which tended to evaporate too quickly) with oil. In 1914 Millikan took up wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
