请输入您要查询的英文单词:

 

单词 femtosecond
释义

femtosecond

noun

fem·​to·​sec·​ond ˈfem(p)-tə-ˌse-kənd How to pronounce femtosecond (audio)
-kənt,
-tō-
: one quadrillionth of a second

Example Sentences

Recent Examples on the Web One evening while working in the lab, Du accidentally lifted his goggles while aligning the mirrors of a femtosecond laser, then a very new type of laser that emitted an extremely short pulse of light. Katie Hunt, CNN, 14 Sep. 2022 Developed during the 1990s, the technique uses ultra-short laser pulses—a femtosecond is one-millionth of a billionth of a second—which produces no heat to cut into a surface of an object. Bryan Hood, Robb Report, 23 Nov. 2021 An encounter of a PBH with a human body would represent a collision of an invisible relic from the first femtosecond after the big bang with an intelligent body—a pinnacle of complex chemistry made 13.8 billion years later. Avi Loeb, Scientific American, 6 June 2021 Ultrashort lasers produce pulses with a duration measured in femtoseconds (a femtosecond is 10-15 or a million-billionth of a second), and while their overall energy may be small, the power level for that brief duration is extremely high. David Hambling, Forbes, 11 Mar. 2021 For context, 1 terawatt is 1 trillion watts, while 1 femtosecond is the equivalent of 1 quadrillionth of a second. Kyle Mizokami, Popular Mechanics, 24 Feb. 2021 Zewail, who would go on to win a Nobel Prize for his research, measured these miniscule changes in femtoseconds; a femtosecond is one millionth of a billionth of a second. NBC News, 19 Oct. 2020 During the late 1980s and early 1990s, however, the pulse durations were brought down to as little as a few femtoseconds (a femtosecond is equal to 10–15 second), approaching the time frame of atomic motions. Quanta Magazine, 30 Sep. 2020 For this solar purifier, the scientists treated aluminum sheeting using a treatment of femtosecond-long—a quadrillionth of a second—laser pulses. Caroline Delbert, Popular Mechanics, 15 July 2020 See More

Word History

First Known Use

1976, in the meaning defined above

随便看

 

英语词典包含469781条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2024/12/23 17:28:10