Dale's latest activity
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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.
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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.
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Dale reacted to Nugatory's post in the thread I How do non-diagonal indices of a metric allow for local flatness? with
Like.
Minkowski spacetime and Minkowski coordinates are different things. The spacetime is what it is no matter what coordinates we use to... -
Dale replied to the thread I How do non-diagonal indices of a metric allow for local flatness?.It doesn’t. The speed of light is only invariant in the standard inertial coordinates. In non-inertial coordinates the speed of light...
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Dale reacted to PeterDonis's post in the thread I How do non-diagonal indices of a metric allow for local flatness? with Like.
Not the way you mean. The Minkowski metric is diagonal when you choose a particular coordinate chart. But you can also choose a chart on...
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Dale reacted to Ibix's post in the thread I How do non-diagonal indices of a metric allow for local flatness? with Like.
Another way to look at it is that it's always possible to pick a timelike vector and three spacelike vectors that are mutually...
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A small amount of water in a tube means a small amount of potential energy of water, which means a small amount of work that can be done.
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There is a high upward force on the red surface, but there is no immediate volume of liquid available to accelerate that surface...
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Dale replied to the thread B Question about pressure of a liquid.The force is high and if there is a crack then it will accelerate upwards. However, it will not go very far or get very fast...
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Dale replied to the thread B What reference frame is used for the velocity v in the Lorentz transformation?.Yes, it is wrong to ask that. The rate a clock ticks depends on the reference frame. So asking “which clock runs slower?” is wrong to...
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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 Like.
No, it proves you didn't understand both theory of relativity AND answers you've been given. Read them again.
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Dale reacted to manuel-sh's post in the thread Introduction: Manuel, working at the intersection of physics and AI with Like.
Thanks Dale! Indeed! And in fact I am not surprised: most of the existing physics datasets are either compilations of papers, books...
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Dale replied to the thread Introduction: Manuel, working at the intersection of physics and AI.Cool. I wish you lots of luck. Current LLM's are really bad at physics.
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Dale replied to the thread I What does equiprobable mean in the context of thermal motion?.Here is a more realistic image: The main thing wrong with this image is that it is 2D and this kind of motion happens in 3D, and also...
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