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knowledge question - 11/23/2005 9:54:04 PM

csc1

Posts: 6
Score: 0
Joined: 11/17/2005
Status: offline

ok this is just a question, does anyone know what's the most reliable expedient to measure time, is it laser, pulsar, or quartzcrystal? I just need to check

thanks if anyone can help

Post #: 1

RE: knowledge question - 11/24/2005 2:30:16 AM

TNO

Posts: 1056
Score: 10
Joined: 12/18/2004
From: thenewobjective.com
Status: offline

The answer isn't as simple as that. Plus what are you measuring the time for? Julian time is based on astronomical positions and is excellent for performing calculations on the subject. Adversely, for Applied physics, Time based off of the Cesium atom is more appropriate:

Perhaps this will help:

http://tf.nist.gov/timefreq/cesium/fountain.htm

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(in reply to csc1)