|
〔 Zepto- (symbol z) is a unit prefix in the metric system denoting a factor of 10−21 or . Adopted in 1991, it comes from the Latin ''septem'', meaning "seven", since it is equal to 1000−7. Examples of its use: *The electric charge on one electron: 160.217657 zeptocoulombs (zC). *One zeptomole (zmol) of substance contains 602 particles. * The human insulin molecule is roughly 10 zeptograms.〔Professor John Dell, Slide 2: https://www.engineersaustralia.org.au/sites/default/files/shado/Learned%20Groups/Colleges/Mechanical%20College/WA%20Branch/Mechanical%20Engineering%20Gone%20Small%20(Presentation%20with%20Audio).pdf〕 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Zepto-」の詳細全文を読む スポンサード リンク
|