- quartz wavemeter
- 石英波长计
English-Chinese electricity dictionary (电气专业词典). 2013.
quartz wavemeter
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Essen, Louis — ▪ 1998 British physicist (b. Sept. 6, 1908, Nottingham, Nottinghamshire, Eng. d. Aug. 24, 1997, Great Bookham, Surrey, Eng.), built the cesium beam atomic clock, a device that ultimately changed the way time is measured. Atomic clocks… … Universalium
Louis Essen — Infobox Scientist name = Louis Essen box width = image width =150px caption = Louis Essen (left center) with Udo Adelsberger (extreme left) birth date = September 6, 1908 birth place = Nottingham death date = August 24, 1997 death place = Great… … Wikipedia
