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Title: The second is currently defined as Post by: Brelou on Feb 23, 2017 The second is currently defined as
A) 1/86,400 of a mean solar day. B) 1/86,164 of a sidereal day. C) 1/31,557,600 of the period of the Earth's rotation around the Sun. D) the time required for light to travel 1/299,792,458 of a meter. E) the time that it takes the radiation from a Cesium-133 atom to complete 9,192,631,770 cycles of oscillation. Title: Re: The second is currently defined as Post by: mtown88 on Feb 23, 2017 Content hidden
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