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Time elapsed for watch with crystal normal or parallel to g

  1. Mar 10, 2007 #1
    What is the approximate fractional difference in time measured between a quartz watch crystal resonating either normally or parallelly to earth's surface gravitation?
     
  2. jcsd
  3. Mar 10, 2007 #2

    Mentz114

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    Quartz is an extremely stiff material and will deform very little in the earth's weak gravity. I doubt if the difference would be measurable except under the most stringent lab conditions.
     
  4. Mar 10, 2007 #3
    I was thinking more in the way of an experimental test of general relativity which affects the simplified quantum mechanics, thus timing, of such a device. One could also orient a cesium clock in these relative positions.
     
  5. Mar 10, 2007 #4

    Mentz114

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    In my opinion, the orientation of a caesium clock will not affect its time keeping. The standard is based on measuring the frequency of light given by a certain energy transition of a Caesium atom. The direction of emission is random, although a photon 'falling' will have a higher frequency than one 'rising'. This experiment has already been done. All of this you know, of course.
     
    Last edited: Mar 10, 2007
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