| NOVEMBER 16 - BIRTHS | |
| James W. Mitchell | |
(source) |
African-American chemist who is best known for advancing the accuracy of trace element analyses. With his collaborators at Bell Labs, he pioneered the development of x-ray fluorescence methods for part per billion (ppb) trace element determinations, innovated high accuracy activation analysis methods for ultratrace analysis, designed the first laser intracavity spectrophotometer for high accuracy practical determinations of sub-ppb levels of trace impurities, and invented the cryogenic sublimation technique for ultrapurification of liquid analytical reagents and chemicals for fabricating optical waveguides. He is currently exploring ways to apply his ultra-precise measuring procedures to detect trace amounts of contaminants in our air and water. |
| Rudolf Pintner | |
(source) |
Anglo-American psychologist who combined interests in mental measurements and education of people with disabilities. His performance assessment measures supplied half of the items of the World War I Army Beta Test. He directed many surveys in his field and wrote a number of scientific works. A Scale of Performance Tests (1917) by Rudolf Pintner and Donald G. Paterson, introduced the Pintner-Paterson Performance Test, the first test of nonverbal intelligence. It was intended as a "supplemental" test to the 1908 Binet battery (which they criticized as unwarrantably favorable to the verbal aspects of individual intelligence). They insisted that there was more than one aspect of intelligence and more than one way of measuring it. [Image: Picture Completion puzzle, part of the Pintner & Paterson's clinical style performance scale (1917)] |
| Joel H. Hildebrand | |
(source) |
U.S. educator and chemist whose monograph Solubility (1924; later editions, Solubility of Non-Electrolytes) was the classic reference for almost a half century. The Hildebrand solubility parameter carries his name. Through his research on the chemistry of solutions, he helped to protect deep-sea divers from "bends." He led the fight against a faculty "loyalty oath," a non-Communist declaration, at University of California (1950). He had no sympathy with Communists, but he and other prominent members of the faculty felt that the oath, by being required of teachers alone, was discriminatory with regard to all university employees. Two years later, the California State Supreme Court decided unanimously in favour of the faculty. |
| Maximilian von Frey | |
(source) |
Maximilian Ruppert Franz von Frey was an Austrian physiologist who studied the sense of touch, providing the first comprehensive information about the cutaneous senses. He confirmed the existence of locations for heat, cold, pressure, and pain reception and studied differential sensitivities to each. He suggested a sensory receptor for each modality but later work showed these identifications to be incorrect. [Image: Sphygmograph used for pulse recording by Frey, 1891] |
| Jules-Louis-Gabriel Violle | |
(source) |
French physicist who made the first high-altitude determination of the solar constant (1875, on Mont Blanc in the French-Swiss Alps). He also determined the fusion points of palladium, platinum and gold. Violle also was interested in the theory of geysers, the origin of hail, and atmospheric exploration through balloon soundings. For high-temperature radiation, he proposed a photometric unit, the violle or Violle's standard (1881). His actinometer is one form of pyrheliometer, a device to measure the intensity of sunlight. It was modified from John Herschel's invention of 1825. It consists of two concentric hollow spheres containing water between them. Sunlight passes through an aperture and falls on a thermometer bulb in the hollow inner sphere. |
| Eugenio Beltrami | |
(source) |
Italian mathematician and mathematical physicist known for his concepts of non-Euclidean geometry. In 1865, he published a paper on how line elements on the surfaces of constant curvature could be represented by linear expressions. His approach offered a new representation of the geometry of constant curvature that was consistent with Euclidean theory. Beltrami studied elasticity, wave theory, optics, thermodynamics, and potential theory, and was among the first to explore the concepts of hyperspace and time as a fourth dimension. His investigations in the conduction of heat led to linear partial differential equations. Some of Beltrami's last work was on a mechanical interpretation of Maxwell's equations. |
| Jean le Rond D'Alembert | |
(source) |
French mathematician known for his work in various fields of applied mathematics, in particular dynamics. In 1743 he published his Traité de dynamique (Treatise on Dynamics). The d'Alembert principle extends Newton's third law of motion, that Newton's law holds not only for fixed bodies but also for free moving bodies. D'Alembert also wrote on fluid dynamics, the theory of winds, the properties of vibrating strings and conducted experiments on the properties of sound . His most significant purely mathematical innovation was his invention and development of the theory of partial differential equations. He published eight volumes of mathematical studies (1761-80). He was editor of the mathematical and scientific articles for Denis Diderot's Encyclopédie. |
|
Today in Science History Science Store Browse a selection of Bargain Science and Nature Books |
| NOVEMBER 16 - DEATHS | |
| Henry Taube | |
1983(source) |
Canadian-born American chemist who in 1983 won the Nobel Prize for Chemistry for his extensive research into the properties and reactions of dissolved inorganic substances, particularly oxidation-reduction processes involving the ions of metallic elements. Metals often form complexes, in which other atoms cluster around the metal atom, transfering and sharing electrons among themselves to bind together. Taube discovered that during a reaction, a temporary "bridge" of atoms often forms between metal atoms. He studied the electron transfer across this bridge, speeding up reactions that would otherwise happen only slowly or not at all. His ideas are relevant beyond his own field of study, for example, in biochemical processes such as respiration. |
| Daniel Nathans | |
(source) |
American microbiologist, corecipient of the Nobel Prize for Physiology or Medicine in 1978 (with American Hamilton Othanel Smith and Swiss scientist Werner Arber). The winners were cited for their discovery and application of restriction enzymes, which provide the "chemical knives" to cut genes from DNA into defined fragments. These may then be used (1) to determine the order of genes on chromosomes, (2) to analyse the chemical structure of genes and of regions of DNA which regulate the function of genes, and (3) to create new combinations of genes. Thus avenues are opened to study the basic problems in developmental biology; and in medicine, to help the prevention and treatment of malformations, hereditary diseases and cancer. |
| Pavel Sergeevich Aleksandrov | |
(source) |
Soviet mathematician who made important contributions to the field of topology (the study of related physical or abstract elements that remain unchanged under certain distortions) and one of the founders of the theory of compact and bicompact spaces. Aleksandrov introduced many of the basic concepts of topology, such as the notion that an arbitrarily general topological space can be approximated to an arbitrary degree of accuracy by simple geometric figures such as polyhedrons. Giving support to international cooperation, he supervised the publication of an English-Russian dictionary of mathematical terminology (1962). |
| Donald Culross Peattie | |
(source) |
American botanist, naturalist and author who won high critical acclaim for his several books on plant life and nature. After college, he joined the U.S. Department of Agriculture as a botanist in the office of foreign seed and plant introduction. From 1922-3 he worked on frost resistance in tropical plants. In 1926, he left the USDA to free-lance in his own field, writing books and also began a nature column in the Washington Star which ran for 10 years. An example of his writing for lay people, his book Flowering Earth (1939, reprinted 1991) reveals the miracle of plant life. Needing no chemical formulas or botanical glossary, it involves the reader in the vital stories of chlorophyll and of protoplasm, of algae and seaweeds, conifers and cycads. |
| Albert Francis Blakeslee | |
(source) |
American botanist and geneticist whose international recognition began with his Ph.D. degree thesis on his discovery of sexuality in the lower fungi (Sexual Reproduction in the Mucorineae, 1904) was significant to the understanding of sexual reproduction of the lower plants. His study of the mutation and geographical distribution of the jimson weed, Datura, provided important information concerning chromosome behavior, genetic balance, and species evolution. He discovered that the alkaloid colchicine causes chromosone duplication in plants - the first demonstration of chemical mutagenesis - which led to commerical production of giant strains of flowers.« [Image right: Jimson weed.] |
| Frederick Gardner Cottrell | |
(source) |
U.S. educator and scientist who invented the industrial electrostatic precipitator (1907), which eliminates suspended particles from streams of gases. He patented the "Art of Separating Suspended Particles from Gaseous Bodies" (No. 895,729). To electrochemists, he is best known for the Cottrell equation. Electrostatic precipitators are still widely used to reduce air pollution by smoke from power plants and dust from cement kilns and other industrial sources. Cottrell contributed to the development of a process for the separation of helium from natural gas, and also was instrumental in establishing the synthetic ammonia industry in the U.S. during attempts to perfect a high temperature process for formation of nitric oxide. |
| Carl (Paul Gottfried) von Linde | |
(source) |
German engineer whose invention of a continuous process of liquefying gases in large quantities formed the basis for the modern technology of refrigeration and provided both impetus and means for conducting scientific research at low temperatures and very high vacuum. |
| Max Abraham | |
(source) |
German physicist whose life work was almost all related to Maxwell's theory. The text he wrote was the standard work on electrodynamics in Germany for a long time. Throughout his life, he remained strongly opposed to Einstein's Theory of Relativity, objecting to its postulates which he felt were contrary to classical common sense. He further held that the experimental evidence did not support that theory. In 1902, he had developed a theory of the electron in which he held that an electron was a perfectly rigid sphere with a charge distributed evenly over its surface. He also believed in the ether theory, thought that future astronomical data would validate it, and thus relativity was not in fact a good description of the real world. |
| NOVEMBER 16 - EVENTS | |
| Skylab III | |
(source) |
|
| New elements | |
(source) |
[Image: The triangle in the glass tube contains the world's first sample of americium, produced in the 60- inch cyclotron in 1944] |
| Atomic pile | |
| First electron tube | |
(source) |
|
| Early car speed record | |
| Dental mallet | |
(USPTO) |
|
| Life preserver | |
(USPTO) |
|
| Brunel patent | |
(source) |
In 1796, English inventor
and engineer Marc Isambard Brunel
was issued his first U.S. patent
for his method of "Ruling Books and Paper." He obtained other U.S. patents,
including for a "Machine for Writing With Two Pens" (17 Jan 1799, "Machine
For Raising Water" (27 Apr 1798) and "Mode of Obtaining Power from Certain
Fluids" (30 Mar 1827). Brunell is famous for his construction of the Thames
Tunnel, the first tunnel excavated under a navigable river, the Thames
in London. His son, Isambard Kingdom
Brunel, also had a distinguished engineering career producing railroads,
bridges and steamships.«
|
| Machines rewarded | |
| Corn | |
(source) |
|
