| General > General Technical Chat |
| DIY measurement of time dilation in a gravity well |
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| Brumby:
For someone who likes to take lazy short cuts (as indicated by their writing) I doubted they would have the discipline to apply focussed thinking and have the ability to wrap their mind around such a subject. I wasn't wrong. Nevertheless, this has been the most entertaining waste of time I've spent all week. ;D |
| TimFox:
Should one want to do a gravitational red-shift experiment, it is probably better to use a tower above the Earth's surface (as in the Mössbauer effect gamma-resonance measurements I cited above), rather than a hole in the ground, since there are some minor problems evaluating the gravitational field down a borehole, since the density of the planet is not distributed uniformly, but the field above the surface is more straightforward to calculate. The original papers and the Argonne historical article about gamma measurements provide guidance as to how much gravitational red shift can be expected with a reasonable tower. |
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