Dale's latest activity
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Dale replied to the thread I The wave equation interpretation of special relativity.I would assume that every author who writes any explanation of length contraction considers their explanation to be a good one... -
Dale replied to the thread I The wave equation interpretation of special relativity.One issue is that length contraction is not a shrinking, but a disagreement. In other words, length contraction occurs even if the...
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Dale replied to the thread I The wave equation interpretation of special relativity.@gentzen I have removed your rather lengthy complaint about moderation actions. Such complaints should be posted to the feedback forum...
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Dale reacted to PeterDonis's post in the thread B Is there a white hole inside every black hole? with
Like.
That's correct. More precisely, in an FLRW universe with zero cosmological constant, it's correct. In fact I'm not even sure if there is... -
Dale reacted to Ibix's post in the thread B Is there a white hole inside every black hole? with Like.
I'm not sure you can even have true black holes in an FLRW universe, because a black hole is a region of spacetime that can't signal to...
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Dale reacted to marees's post in the thread B Is there a white hole inside every black hole? with Like.
It is made of rice. Basically rice noodles (string hopper in sri lanka). Goes well with all kinds of spicy curries or with coconut milk 😉
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Dale replied to the thread B Is there a white hole inside every black hole?.I agree. Since it is the beginning of the manifold it cannot have any cause. It would have to just exist, and I don’t even know if such...
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Dale reacted to PeroK's post in the thread B Is there a white hole inside every black hole? with Like.
It seems to me that a white hole is a mathematical concept that is largely irrelevant to the physical sciences.
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Dale replied to the thread B Is there a white hole inside every black hole?.In a Schwarzschild spacetime the white hole is not a location that could be inside the black hole, it is a time that occurs before the...
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Dale reacted to martinbn's post in the thread B Is there a white hole inside every black hole? with Like.
All of your points are either incorrect or they make no sense.
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Dale reacted to PAllen's post in the thread I Synchronizing clocks at different locations to measure speed of light with Like.
No, as measured locally by an accelerometer, or by design with preprogrammed propulsion systems. The aim is to demonstrate: 1)...
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Dale reacted to PAllen's post in the thread I Synchronizing clocks at different locations to measure speed of light with Like.
Note, an invariant fact is that if you move the clocks away and then back together with identical acceleration profile, they will be in...
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Dale reacted to PeroK's post in the thread A three month long summer vacation from public school seems stupid with Like.
Define "stupid". What are the benefits and/or disadvantages of changing it? Should the break be longer or shorter? If so, how long?
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Dale reacted to sevensages's post in the thread A three month long summer vacation from public school seems stupid with
Sad.
I am asking if a three month long vacation for children from grades kindergarten to grade 12 is stupid.