Recent content by TcheQ

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    Graduate What are the unanswered questions about Hawking radiation and the Unruh effect?

    This is the part where I got confused: Don't bother. I will research it myself how both these statements can be in agreement with each other, but also conflict with my own wording.
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    Graduate What are the unanswered questions about Hawking radiation and the Unruh effect?

    loldudes? You described particle tunnelling in the same way that I describe (to myself) quantum creation probabilities. If the question wasn't clear, I was asking how my interpretation differs from what got said, considering people like haelfix were saying the tunneling dual-particle analogy...
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    Graduate What are the unanswered questions about Hawking radiation and the Unruh effect?

    So basically, you guys are having trouble reaching consensus on what happens because quantum physics + relativity don't explain the mechanics of time dilation coupled with zero-point energy particle creation satisfactorily. this would require infinite energy to maintain the photons that...
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    Graduate What are the unanswered questions about Hawking radiation and the Unruh effect?

    Thanks for those links. Heat transfer doesn't need to tunnel though (?). Normal photon or particle emission due to thermal sources can be described by quantum effects - does this mean the thermal emission from a black hole is un-quantum (strictly classical)? Or is HR only allowed in a...
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    Graduate I Still Don't Get General Relativity

    The Ricci Tensor is set to zero...so we can solve the other equations! (?) https://www.physicsforums.com/showthread.php?p=2603693 http://ion.uwinnipeg.ca/~vincent/4500.6-001/Cosmology/WeylTensor.htm Page 305-306 explains a little as to why...
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    Graduate I Still Don't Get General Relativity

    You know the example of drawing a triangle on the surface of the Earth such that the angle of all corners is 90° - and then you compare that triangle to a 2d triangle? Ricci Tensor denotes the same kind of transform, except for 3 dimensions over 4, instead of 2 dimensions over 3. e.g. We...
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    Undergrad Red or Blue Shift: Moving Light Sources Forward/Backward

    Andromeda Galaxy= moving towards us=blueshift Sombrero Galaxy=moving away from us=redshift
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    Graduate What are the unanswered questions about Hawking radiation and the Unruh effect?

    uhhh a particle has a probability to be outside of the black hole it is part of. When this probability is fulfilled, the particle radiates. The end (?)
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    Graduate Gravity and Instantaneous Information sharing

    mathematically, this is known as iG
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    Graduate What happens biologically during time dilation?

    Including Einstein, the majority of physics graduates, postgrads and PhD's, and the guys who ran this experiment
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    Graduate Does Relativity Affect How We See Simultaneous Events on a Moving Train?

    Question 1) relies on question as 2). As other's have stated, it a simple coordinate transfer once 2) is derived. Also you didn't state how long the train is when at rest, but I'm going to assume it's 1ls long in it's own frame (it really doesn't matter since I'm going to use train length =L...
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    Undergrad How Does the Twin Paradox Affect Aging in Relativity?

    It doesn't matter what university it is, they all teach the same thing (assuming it's maths or physics :P). The Yale guy is particularly good. As for maths, you need to learn calculus, differentials and matrices for relativity. If you want to learn quantum mechanics you need some form of...
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    Undergrad Light clock moving to demonstrate time dilation

    They were initially intended to be used in aether calcs, but that doesn't mean we then discard them when the concept of the aether was dissolved due to experimentation. It would be like discarding the microwave background because it wasn't intended to be detected. x²-c²t²=0 is just an...
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    Undergrad Light clock moving to demonstrate time dilation

    It was a rhetorical question. Maxwell's equations are immutable in relativity, and the theory is supported by evidence. It does not matter how they were derived, they predict c.