http://www.inventioninfo.info/logfiles Invention timeline, news, and information. Sun, 17 May 2009 12:58:06 +0000 http://backend.userland.com/rss092 en b. November 27, 1848 and d. April 16, 1901 American scientist. Professor at Johns Hopkins University. His principal discoveries were the magnetic action due to electrical convection, the exact determination of the mechanical equivalent of heat, the discovery of concave gratings and the machine for ruling by which the analysis of ... http://www.inventioninfo.info/logfiles/1359/invention-timeline-henry-augustus-rowland-american-scientist-determined-the-mechanical-equivalent-of-heat-and-discovered-concave-gratings b. November 27, 1701 and d. April 25, 1744 Swedish astronomer. In 1736 he was selected by the French government to assist in the measurement of the length of a degree in Lapland. He introduced in about 1742 the Centigrade or Celsius thermometer. I can is a hero, the first in the ... http://www.inventioninfo.info/logfiles/1358/invention-timeline-anders-celsius-swedish-astronomer-introduced-the-centigrade-or-celsius-thermometer-in-1742 b. ? 1704 and d. ? 1776 English mechanic and inventor of cast-steel. He was bred to a mechanical calling and became celebrated for his expertness in repairing clocks, in making and repairing locks, smoke-jacks, roasting-jacks and other articles requiring mechanical skill. He practiced surgery with dexterity. He introduced several improved ... http://www.inventioninfo.info/logfiles/1357/invention-timeline-benjamin-huntsman-english-mechanic-and-inventor-invented-the-cast-steel b. November 26, 1810 and d. December 27, 1900 English inventor of the hydro-electric machine and of the gun which bears his name. 1856 he was appointed engineer-in-chief for rifled ordnance and superintendent of the foundry at Woolwich.  Then towns he quickened by mechanic arts,  And bade the fervent city glow with toil;  Bade ... http://www.inventioninfo.info/logfiles/1355/invention-timeline-w-g-armstrong-english-inventor-invented-the-hydro-electric-machine-and-of-the-gun-which-bears-his-name b. November 25, 1816 and d. ? American physicist. He discovered the use of the star-spectroscope to show the exact state of achromatic correction in an object glass, particularly for the rays used in photography. He constructed a micrometer for the measurement of astronomical photographs, for use upon pictures of solar ... http://www.inventioninfo.info/logfiles/1353/invention-timeline-lewis-morris-rutherford-american-physicist-discovered-the-use-of-the-star-spectroscope-to-show-the-exact-state-of-achromatic-correction-in-an-object-glass-particularly-for-the-rays b. November 25, 1835 and d. ? American manufacturer. He was one of the first to read telegraphic signals by sound. Associated with others, he established a rolling mill and from this has grown the most extensive and complete system of steel and iron industries ever controlled by an individual. He ... http://www.inventioninfo.info/logfiles/1352/andrew-carnegie-american-manufacturer-he-established-a-rolling-mill b. June 10, 1777 and d. November 24, 1839 American engineer. In 1818-1824 he was an engineer of the Erie Canal; the first aqueduct at Rochester was designed and superintended by him; 1825-1829 he was engineer of the canal system of Ohio and chief engineer of the Louisville and Portland Canal; ... http://www.inventioninfo.info/logfiles/1351/invention-timeline-david-stanhope-bates-american-engineer-designed-and-superintended-the-first-aqueduct-at-rochester b.November 24, 1834 and d. July 12, 1873 French inventor. In 1869 he devised an ammoniacal fireless engine for the propulsion of street cars. The motor has not been adopted in the United States but in France and Germany it is extensively used for street cars and vehicles. He patented another ... http://www.inventioninfo.info/logfiles/1350/invention-timeline-emile-lamm-french-inventor-devised-a-process-for-the-manufacture-of-sponge-gold-now-largely-used-by-dentists b.November 23, 1616 and d. October 8, 1703 English mathematician and clergyman. He had consummate skill in the art of deciphering and was one of the first to give power of communication to the deaf and dumb. His mathematical works form three volumes; the principles of analogy and continuity were introduced ... http://www.inventioninfo.info/logfiles/1349/invention-timeline-john-wallis-english-mathematician-and-clergyman-invented-the-symbol-for-infinity b.November 23, 1799 and d. September 2, 1866 American hydrographer. He made the first accurate survey of New York Harbor; in 1819-'20 the first survey of the Bahama banks and the shoals of George and Nantucket, and in 1824 he surveyed the entrance of New York Harbor from Barnegat to Fire ... http://www.inventioninfo.info/logfiles/1346/invention-timeline-edmund-blunt-american-hydrographer-made-the-first-accurate-survey-of-new-york-harbor