From: Ron Kean (ronkean@juno.com)
Date: Sun Jul 18 1999 - 20:09:35 MDT
On Sun, 18 Jul 1999 14:02:12 -0400 "John Clark" <jonkc@worldnet.att.net>
writes:
>
>
>OK, but how long is a second? Is it the time it takes light to travel
>299,792,458 meters? This sort of thing could give circular
>definitions >a bad name.
>
According to the CRC Handbook of Chemistry and Physics, the second is 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
atom of Cesium 133. That's about 3.75 times the frequency at which a
typical microwave oven operates.
Ron Kean
.
.
.
.
.
.
.
___________________________________________________________________
Get the Internet just the way you want it.
Free software, free e-mail, and free Internet access for a month!
Try Juno Web: http://dl.www.juno.com/dynoget/tagj.
This archive was generated by hypermail 2.1.5 : Fri Nov 01 2002 - 15:04:30 MST