Time elapsed for watch with crystal normal or parallel to g

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Discussion Overview

The discussion revolves around the effects of gravitational orientation on the time measurement of quartz and cesium clocks. Participants explore the implications of general relativity on the timing mechanisms of these devices, considering both theoretical and experimental perspectives.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested, Experimental/applied

Main Points Raised

  • One participant inquires about the fractional difference in time measured by a quartz watch crystal depending on its orientation relative to Earth's gravity.
  • Another participant suggests that the stiffness of quartz means any difference would likely be negligible and only measurable under strict laboratory conditions.
  • A different viewpoint proposes that the discussion could relate to experimental tests of general relativity, which may influence the quantum mechanics involved in timing devices.
  • One participant argues that the orientation of a cesium clock should not affect its timekeeping, citing that the frequency measurement is based on a random emission direction of photons, although gravitational effects on frequency are acknowledged.

Areas of Agreement / Disagreement

Participants express differing opinions on whether the orientation of clocks affects time measurement, with some asserting it does not while others suggest it could under specific conditions. The discussion remains unresolved regarding the measurable impact of gravitational orientation on clock accuracy.

Contextual Notes

There are assumptions regarding the conditions under which differences might be measured, and the discussion does not clarify the extent of gravitational effects on the timing mechanisms of quartz versus cesium clocks.

Loren Booda
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What is the approximate fractional difference in time measured between a quartz watch crystal resonating either normally or parallelly to Earth's surface gravitation?
 
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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.
 
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.
 
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.
 
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