science · 20 November 1873 · 151 years ago
birth
Born 20 Nov 1873; died 15 Sep 1962 at age 88.
William W(eber) Coblentz was an American physicist and astronomer whose work lay primarily in infrared spectroscopy. In 1905 he founded the radiometry section of the National Bureau of Standards, which he headed for 40 years. Coblentz measured the infrared radiation from stars, planets, and nebulae and was the first to determine accurately the constants of blackbody radiation, thus confirming Planck's law.
OnThisDay.net