(Encyclopedia) yard, abbr. yd, basic unit of length in the customary system of English units of measurement; all other units in the English system, such as the inch, foot, rod, and mile, are derived…
(Encyclopedia) cgs system, system of units of measurement based on the metric system and having the centimeter of length, the gram of mass, and the second of time as its fundamental units. Other cgs…
(Encyclopedia) Nunes, PedroNunes, Pedropĕˈdr&oobreve; n&oomacr;ˈnəsh [key], Lat. Petrus Nonius, 1502–1578, Portuguese mathematician, geographer, and writer on navigation and geometry. He was…
(Encyclopedia) alpha particle, one of the three types of radiation resulting from natural radioactivity. Alpha radiation (or alpha rays) was distinguished and named by E. R. Rutherford in 1909, who…
(Encyclopedia) Wright, Sir Almroth Edward, 1861–1947, British pathologist. He was professor of pathology (1892–1902) at the Army Medical School, Netley, and professor of experimental pathology, Univ…
(Encyclopedia) Rutherfurd, Lewis MorrisRutherfurd, Lewis Morrisrŭᵺˈərfərd [key], 1816–92, American physicist, b. New York City, grad. Williams, 1834. From 1837 to 1849 he practiced law. Rutherfurd…
(Encyclopedia) Drude, Paul Karl LudwigDrude, Paul Karl Ludwigpoul kärl l&oobreve;tˈvĭkh dr&oomacr;ˈdə [key], 1863–1906, German physicist. Drude first experimented with the physical…
(Encyclopedia) Bose, Sir Jagadis Chandra, or Sir Jagadis Chunder BoseSir Jagadis Chunder Bosejəgäˈdēs chŭnˈdrə bōs, chŭnˈdər [key], 1858–1937, Indian physicist and plant physiologist, educated in…
