PeroK's latest activity
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PeroK replied to the thread Just a physics enthusiast.Physics books hopefully and not pulp fiction. -
Hi everyone, I'm just a physics enthusiast. I took some first-year courses a long time ago, but I wasn't able to continue, so I don't...
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PeroK replied to the thread B Can big bang be a part of a loop?.Here it is (note that this is an Advanced, research-level paper). It might be useful to see that physics isn't just about having an...
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PeroK replied to the thread B Can big bang be a part of a loop?.The best model for the universe suggests that its expansion will continue forever. There's no evidence that the universe will...
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My name is Anureet i am high schooler from India and i absolutely love physics a lot. Just want a community where i can discuss and...
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PeroK replied to the thread Hii ! I am anureet.:welcome:
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PeroK replied to the thread I Relativity of simultaneity in actuality.Just to note that, in my opinion, that way of teaching/demonstrating the relativity of simultaneity is extremely clumsy, with several...
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PeroK reacted to Dale's post in the thread I Coulomb gauge implies instantaneous radial electric field? with
Like.
This is shown in Jackson's 2002 paper "From Lorenz to Coulomb and other explicit gauge transformations" (Am J Phys, 35:832-837)... -
PeroK reacted to fresh_42's post in the thread Amateur researcher analyzing empirical patterns in physics. with
Informative.
Hello and :welcome: ! I have recently searched for instances in physics that were suited to be an example of independent research. I... -
PeroK replied to the thread Trying to understand the logic behind adding vectors with an angle between them.Let me show you the alternative way to solve this problem, using vector components. We'll let ##\vec v_1## be along the positive...
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PeroK replied to the thread Trying to understand the logic behind adding vectors with an angle between them.Those are speeds. Speed, by definition, is the magnitude of a velocity. The original statement of the problem is sloppy in using...
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PeroK reacted to PeterDonis's post in the thread B What happens to information inside a blackhole with Like.
There is a mathematical model in which that's true, but it's not one that is physically realized in our universe. No, because in the...
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PeroK replied to the thread B The Effect of Linear and Rotational Motion on Measured Weight.Newton's laws of motion involve force, mass and acceleration. They do not involve the velocity of an object. Note that velocity is...
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PeroK replied to the thread Trying to understand the logic behind adding vectors with an angle between them.That source is perhaps a little advanced for the OP at this stage.
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PeroK replied to the thread Trying to understand the logic behind adding vectors with an angle between them.Suppose you have a triangle with two sides that are 3 and 4 units respectively. Does the length of the third side depend on the angle...