PeterDonis's latest activity
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No. The local centrifugal force does not have a cause. It is not a physical thing subject to cause and effect. It is purely math. It can... -
PeterDonis replied to the thread Undergrad Linear vs rotary motion.You're the one that should be answering that question, since you're the one that made the claims about the ring laser gyroscope. If you...
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PeterDonis replied to the thread Undergrad Linear vs rotary motion.That's a matter of some debate in the literature. The argument for it being non-Machian is that there are solutions of the Einstein...
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PeterDonis replied to the thread Undergrad Linear vs rotary motion.It isn't experiencing "centrifugal force". It's experiencing internal forces between its parts because they push on each other. Those...
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As I already told you in a previous thread, Centrifugal force is not something that can be experienced. No experiment can ever measure...
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PeterDonis reacted to FactChecker's post in the thread Undergrad Light clock treating horizontal and vertical motion differently? with
Like.
IMO, it is false that the Michelson-Morley experiments were artificially designed to give the result supporting the postulate of a... -
PeterDonis replied to the thread Undergrad Linear vs rotary motion.What "rotation rate" does a ring laser gyroscope measure? Relative to what observer? What "axis orientation" does it measure? Relative...
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PeterDonis reacted to Dale's post in the thread Undergrad Light clock treating horizontal and vertical motion differently? with Like.
It isn’t relevant and it isn’t correct either. Some postulates are facts. Being a postulate doesn’t make something a fact, but it...
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PeterDonis reacted to Ibix's post in the thread Undergrad Does the scale factor need to be normalized? with Like.
Hm. Perhaps another forum quirk. Apparently I don't understand what question you are asking. I thought you were asking why the ratio of...
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PeterDonis reacted to Ibix's post in the thread Undergrad Does the scale factor need to be normalized? with Like.
Forum quirk. Highlight a block of text and click reply in the little popup and it quotes the text but drops quoted LaTeX. If you need to...
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PeterDonis replied to the thread Undergrad Does the scale factor need to be normalized?.No, because, as I've already said, that particular quantity does not have a finite limit as ##t \to 0##. But you don't need an answer to...
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PeterDonis replied to the thread Undergrad Does the scale factor need to be normalized?.Because it's irrelevant. You don't have to divide by zero to take the limit as I described. Or to calculate any other actual physical...
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PeterDonis replied to the thread Undergrad Does the scale factor need to be normalized?.You don't have to explicitly take such a ratio to evaluate the integral. You can take a limit as ##t \to 0##, and find that you get a...
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PeterDonis replied to the thread Undergrad Does the scale factor need to be normalized?.The value of "how many times the universe has expanded since the BB", which is basically what your integral is computing, does not...
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PeterDonis replied to the thread Undergrad Does the scale factor need to be normalized?.As I said, we agree on the physics. We just disagree on the usage of the term "normalization". I don't agree with your usage of it here...