Draper's law

Draper's law
only the rays that are absorbed by a photochemical substance will produce a chemical change in it.

Medical dictionary. 2011.

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  • Draper point — The Draper point is the approximate temperature above which almost all solid materials visibly glow as a result of blackbody radiation. It was established at 977˚ F (525˚ C, 798 K) by John William Draper in 1847.[1][2][3] Bodies at temperatures… …   Wikipedia

  • law — 1. A principle or rule. 2. A statement of fact detailing a sequence or relation of phenomena that is invariable under given conditions. SEE ALSO: principle, rule, theorem. [A.S. lagu] Alexander l. states that a jerky nystagmus becomes worse when… …   Medical dictionary

  • Draper — John William, English chemist, 1811–1882. See D. law …   Medical dictionary

  • Draper, William Henry — (1801 1877)    Born in London, England. In his youth ran away to sea and served on an East Indiaman. Came to Canada in 1821 and taught school at Port Hope; subsequently studied law and began practice at York. Elected to Assembly of Upper Canada… …   The makers of Canada

  • James T. Draper, Jr. — James Thomas Jimmy Draper, Jr. (born October 10 ,1935), is a prominent figure in the theologically conservative Southern Baptist Convention, the largest Protestant denomination in the United States. He was the SBC president from 1982… …   Wikipedia

  • Dennis Draper — Brigadier General Dennis Draper Chief Constable of the Toronto Police Department In office 1928–1946 Preceded by Samuel Dickson Succeeded by John Chisholm …   Wikipedia

  • University of Pennsylvania Law Review — Infobox Journal title = University of Pennsylvania Law Review editor = discipline = Law review language = English abbreviation = U. Pa. L. Rev. publisher = University of Pennsylvania Law School country = United States frequency = Monthly history …   Wikipedia

  • Don Draper — Jon Hamm as Don Draper. Mad Men Portrayed by Jon Hamm First appearance Smoke Gets in Your Eyes ( …   Wikipedia

  • John William Draper — Infobox Scientist name = John William Draper box width = image width =150px caption = John William Draper birth date = May 5, 1811 birth place = St. Helens, Merseyside, England death date = January 4, 1882 death place = Hastings on Hudson, New… …   Wikipedia

  • Hal Draper — (1914 1990) was a Third Camp American socialist activist, Marxist and author, perhaps best known for his role in the Berkeley, California Free Speech Movement. His Third Camp focus differed from that of Max Schachtman in its emphasis on the grass …   Wikipedia

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