Help make Alexa smarter on Alexa Answers. Sign in with Amazon

Science

How long is an atom second?

2 Answers
ANSWER

If it is supposed to be Atomic second, then it is the newest definition of one second using oscillation of Cesium. So atomic second is exactly one second long.

{{ relativeTimeResolver(1591555318516) }}
LIVE
Points points 1
Rating

Since 1967, the second has been defined as exactly "the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom" (at a temperature of 0 K).

{{ relativeTimeResolver(1591500285931) }}
LIVE
Points points 6
Rating

Join Alexa Answers

Help make Alexa smarter and share your knowledge with the world

LEARN MORE

Blog Help Center Conditions of Use Privacy Notice

© 2010 - 2022, Amazon.com, inc. or its affiliates. All Rights Reserved.