Recent content by Rena Cray

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    Retro causation in weak measurements?

    The idea is not to have a another predictive method to get results given a set of initial conditions. The two state formalism is nearly, but not quit implied if the laws of physics are time symmetric, modulo CP. We can always say the state vector evolves unitarily, and so reversibly, and...
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    Uniqueness of Maxwell's equations

    Do you have a formal, or clear statement of the uniqueness theorem?
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    Free falling into a black hole that evaporates by Hawking Radiation

    It's obvious where this is going. I'm not going to look at every metric that comes down the pike and demonstrate an infinite vs. infinite transit time. I'm sure there are an infinitude of them. Going over to the WF metric and it's relatives doesn't make the problem go away, and it's still...
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    Free falling into a black hole that evaporates by Hawking Radiation

    The paper you linked doesn't appear relevant to answer the question raised. They argue that "We find that, in any realistic collapse scenario, the backreaction effects do \emph{not} prevent the formation of the event horizon." They simply say that backreaction doesn't inhibit formation. My...
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    Free falling into a black hole that evaporates by Hawking Radiation

    I doubt that. What did you find wrong in my argument? Did you read it or just the first few lines?
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    Free falling into a black hole that evaporates by Hawking Radiation

    First get a black hole. Nothing falls into a classical black hole. The following is only along classical considerations and include Hawking radiation. I define a black hole as a region from which light cannot escape. What happens in one coordinate system happens in another coordinate system...
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    Why things cant go speed of light?

    ghwellsjr. Please tell me how things move at other than c. I'd really like to know. Normally this should bring up the higgs bosson. But I would like to hear something else.
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    What is the stress-energy tensor used for?

    Seriously?? what I ask is beyond your kin? You will have to appeal to internet research. You won't find it Wald, you won't find it in Carroll, you won't find it in MTW. Don't pretend with me.
  9. R

    What is the stress-energy tensor used for?

    I'm not a beginning student. What are the dimensions of the stress-energy tensor, and the dimensions of their bases?
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    How does Maxwell equation suggest that the speed of light is the same

    The speed of light is not c. This is simplistic. We can pick out a particular direction where the phase velocity is c, minimally,in vacuum. In all other directions the phase velocity exceeds c. You must understand that when the typical poster says the velocity of light is c, they are speaking...
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    Uncovering the Flaws of Born Inequality: A Deeper Look into Quantum Particles

    The Born in ineqality fails experimentally and fails to make sense if we think of quanta as particles. Does it make sense otherwise?
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    Why do we get an interference pattern in a double slit experiment?

    I think to myself "if these folks would stop thinking of the "photon" did this, or the "electron" did that, you quantum philosophers would get somewhere.
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    CPT and Diffeomorphism Invariance

    I'm coming back to this because it bothers me that I seem to be in general disagreement. No one has yet defined what they mean when writing of Lorentz transforms; if they imply improper rotations inclusive or not. This qualification is pivotal. I think everything we have to know is...
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    How do we know that a photon is massless?

    You miss the point. You probably think there are spatial points having various physical properties. I say your 'photon' has no velocity associated momentum until it is measured. So who is right? It doesn't matter. No one has made sense of it. In the mean time, before this historic event...
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    When do Maxwell's Equations break down?

    Sorry, I don't buy this. How do we define the randomness of spontaneous emission? In response we mumble something about monte carlo casinos and roulette wheels. How do we define this classical randomness? The only way I can think of that isn't pretentious is to refer to the measurement of...
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