Dale's latest activity
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Dale reacted to weirdoguy's post in the thread B What reference frame is used for the velocity v in the Lorentz transformation? with
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There are no authoritative theories in physics. We do not "belive" in any theory because someone said we should. We "belive" in them... -
Dale reacted to Ibix's post in the thread B What reference frame is used for the velocity v in the Lorentz transformation? with
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Of course. But you aren't doing anything except repeating "this doesn't make sense to me personally". You need to do some maths to... -
Dale replied to the thread B What reference frame is used for the velocity v in the Lorentz transformation?.Not here. The place for questioning and doubting authoritative theories is the professional scientific literature. PhyscisForums is an... -
Dale reacted to Ibix's post in the thread B What reference frame is used for the velocity v in the Lorentz transformation? with
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True. The advantage of the Sun rest frame is that it is the only one in which the speed of both ship and Earth is constant, so it is the... -
Dale reacted to PeterDonis's post in the thread B What reference frame is used for the velocity v in the Lorentz transformation? with
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That's correct. That's wrong. The ##v## in the Lorentz transformation is the relative velocity between the two frames. -
Dale replied to the thread B What reference frame is used for the velocity v in the Lorentz transformation?.Yes. That is correct. In fact it is one of the underlying assumptions of the Lorentz transform This is wrong. The fact that there is no... -
Dale reacted to sbrothy's post in the thread Site Usability nitpick -- Hyperlinks should be underlined with
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You're right, I didn't get it before getting involved. Shame on me. It really seems to be grinding your gears though! Watch your blood... -
Dale replied to the thread Site Usability nitpick -- Hyperlinks should be underlined.I am not sure that is the de-facto standard. Here is a random google page: I had my mouse over "Tournament draw", so this is the same... -
Dale replied to the thread I What does equiprobable mean in the context of thermal motion?.From what I can tell it is not a very high quality book on this specific topic. I think it might be suitable as a reference for someone... -
Dale replied to the thread I What does equiprobable mean in the context of thermal motion?.Yes. The velocity in each direction is given by a standard normal distribution, so it has mean = 0 and standard deviation = 1. -
Dale replied to the thread I What does equiprobable mean in the context of thermal motion?.Really? What is the specific direction in the figure in post 29? -
Dale replied to the thread I What does equiprobable mean in the context of thermal motion?.This is not a very good explanation of what the variables mean. It is helpful if you write the expression that you want help with, as... -
Dale replied to the thread I What does equiprobable mean in the context of thermal motion?.That isn’t correct, as we already explained above. -
Dale replied to the thread I What does equiprobable mean in the context of thermal motion?.What are the variables? Again, this is not a good depiction, in my opinion. See above. -
Dale reacted to Nugatory's post in the thread I How do non-diagonal indices of a metric allow for local flatness? with
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Minkowski spacetime and Minkowski coordinates are different things. The spacetime is what it is no matter what coordinates we use to...

