Dale's latest activity
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Dale reacted to Demystifier's post in the thread I Transformation for Lemaitre coordinates with
Like.
More generally, for two system of coordinates ##x## and ##y##, one has ##x^{\mu}=f^{\mu}(y)##, so $$dx^{\mu}=f^{\mu}_{,\nu}(y)dy^{\nu}$$... -
Dale reacted to FactChecker's post in the thread I Understanding the historical shift away from absolute simultaneity with Like.
In general, you should separate the goals of clear understanding of physics versus knowing the history. There were many confused people...
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Clock synchronization is inherent in any experiment to measure the one-way speed of light, which is the very title of this thread. So...
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In my opinion arguments over or about the one way speed of light are pretty much a dead end, but rereading the post I see Peter was...
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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...
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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...
