Dale's latest activity
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Dale replied to the thread Site Usability nitpick -- Hyperlinks should be underlined.Their underlining is better than most because the underline is separated from the baseline of the text by a greater distance than most... -
Dale replied to the thread Site Usability nitpick -- Hyperlinks should be underlined.Yes, it is. The experts writing the standards you are citing are not actually saying what you claim they are saying. The standard does...
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Dale replied to the thread Site Usability nitpick -- Hyperlinks should be underlined.I am one such person and your suggested "improvement" marginalizes me. And you are misrepresenting them in favor of your personal...
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Dale replied to the thread Site Usability nitpick -- Hyperlinks should be underlined.I am still not convinced of this. And although it clearly exasperates you, your exasperation is not a credible substitute for actual...
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What you are really measuring, if anything, is whether a (rigid) object retains the same proper length when rotated in a gravitational...
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Speed isn't a well defined measure in curved spacetime. So the answer is yes or no, depending on your coordinate choice.
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Dale replied to the thread A 1-Way Speed of Light.If the OWSOL is anisotropic then increasing the distance does not help. It gives a longer time for a smaller error to accumulate. The...
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Here is the relevant article: https://pubs.aip.org/physicstoday/article/62/3/37/395000/Testing-relativity-from-the-1919-eclipse-a The...
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And I think it's fair to say that Eddington's prestige precluded any real review of the results at the time. They were just accepted.
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Probably. But, it gave the newspapers a great headline!
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Dale replied to the thread I Eddington’s margin of error.Unfortunately, in Eddington's day it was not common to report experimental errors. So you may need to look at more modern experiments...
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Dale replied to the thread A Is the constancy of c a postulate or a derivable theorem?.An alternative approach is to just write the most general affine transformation between inertial frames and determine the coefficients...
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Dale reacted to cianfa72's post in the thread I How do non-diagonal indices of a metric allow for local flatness? with
Like.
In Anderson coordinates the expression of the flat spacetime metric ##ds^2## includes mixed term in ##\kappa dtdx##. For ##\kappa=0##... -
Dale replied to the thread I Transformation for Lemaitre coordinates.Yes, so I think I need to go back and be more careful with both equations 4 and 6. I will try to do that sometime later this week
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Dale reacted to PeterDonis's post in the thread I Transformation for Lemaitre coordinates with Like.
This will be true in general for any transformation between the Schwarzschild chart and a chart that doesn't have a coordinate...
