| 单词 | zeptosecond |
| 释义 | > as lemmaszeptosecond Prefixed to the names of units of measurement to denote a factor of 10−21 (one thousand million million millionth; one thousandth to the power of seven), as zeptogram, zeptosecond, etc. Symbol z. Also: forming corresponding adjectives, as zeptomolar. ΚΠ 1991 Rapport de la 10e Session, Commité Consultatif des Uniés (Bureau Internat. des Poids et Mesures) u44 After further discussion along this line the CCU decided as follows:..10−21 zepto [symbol] z... 10−24 yocto [symbol] y. 1994 New Scientist 3 Dec. 81/2 The elementary charge is 1.6 x 10−19 coulombs (160 zeptocoloumbs) and the mass of a proton is 1.7 yoctograms. 2000 Adv. Chromatrogr. 40 281 A unit density particle of 2nm diameter weighs a zeptogram. 2001 Scientist (Nexis) 14 May 20 The signal is then detected (limit in the low zeptomolar range) by the two detectors of the Odyssey IR Imager. 2011 S. P. Hau-Riege High-intensity X-rays vi. 159 Even bandwidth-limited x-ray pulses are not sufficiently short to resolve motion within nuclei that occurs even faster on the time scale of zeptoseconds. < as lemmas |
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