Recent content by Abbas Sherif

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    A GR question about null surfaces, vectors and coordinates

    That's the scalar product (the dot product) of the vector field del-r with itself.
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    Quantum mechanics and black holes

    Naked singularities don't necessarily have to be extreme BHs. They are just BH with missing event horizons which could be associated with a BH with a rotating singularity.
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    Quantum mechanics and black holes

    No. It's is the external observer that views time to stop for an infalling observer (given he has already crossed the event horizon). This is do simply to the fact that light leaving the BH never reaches the external observer but hovers over the event horizon. However, time is perfectly defined...
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    Does moving at high speeds actually slow down time?

    True. Simply put, a denser mass will have a more negative gravitational potential and will thus slow down any clock in its gravity field. One have to be careful in understanding the slowing down of clocksw stuff. One is put forward by special relativity where the proximity of a moving vehicle to...
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    Quantum mechanics and black holes

    I introduce this to explain volume compression where we see how density goes infinite. Yes its true this is used in 3 dimensional euclidean space. We can equally argue that if we assume that the black hole is a spherical schwardzchild black hole,since the volume in question is simply the...
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    Quantum mechanics and black holes

    Hey, we will have to be careful how we present things here. you will have to understand there are people on this forum who take thing as we write them. Things don't get crushed to infinity. Saying this is illogically irrelevant. infinity has two subsets, large and small and we will have to point...
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    Quantum mechanics and black holes

    The whole thing bows down to what you are describing within the black hole. If you are discussing mass on the large scale of the black hole, classical gravity is a good hook. Here physicists are describing the forces of nature which deals with force carrying particles with zero mass or mass with...
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    Big Bang: Is this statement true?

    Hey there guys. Yeah I pretty agree with what you are saying mathman. tha was the Planck's time 9 approximately 10^-43 seconds after the big bang. i think I will gpo with the creation of matter and energy. The energies were probably created from vacuum fluctuations. The energy density which is a...
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    Is the Higgs Boson Really the Graviton?

    You're right Bob. The Bosons being massive means their interaction is short ranged. The graviton on the contrary acts over a long distance since they have no mass. Spin infact is different so I just don't see how we aregoing to be able to relate the two.
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    Hawking Radiation: How Do Black Holes Emit?

    You are wrong for using the word real in the first place. Funky rightly said virtual ( because we haven't of cannot directly observed them). The fact is, they are created near the mouth of the black hole and one has negative while the other has positive energy(this I believe is principally not...
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    Unraveling the Mysteries of Vacuum Genesis

    Is mean hippy referring to the idea of the Yang- Mills field interaction? Thus is where particles are created out of vacuum. There should be no absolute rest in a vacuum which we all know will violate the uncertainty principle( both momentum and position zero). In suct case, there is what is...
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    Symmetry and range of interaction

    Here we are not discussing the color force's broken symmetry. In fact there's no way to achieve such high temperatures. Put simply, because the gluons are contained in the neutron and proton. they cannot be used to predict the range. anything coming out of the neutron or proton will be a...
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    Symmetry and range of interaction

    I think we could make this more logical for him than mathematical. We know that gravity is brought on by the presence of mass and that gravity attracts and thus drops distances a mass is to travel. If we have, let's say, zero mass, there is very little gravitational pullback on the particle and...
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    Symmetry and range of interaction

    I agree with you in full. I think exact symmetry means when you cannot distinguish the three types of intermediate vector bosons (W+,W-, Z0 particles). They are long range since existing as quarks, they are massless but acquire masses as the symmetry is broken. In this case, they become short...
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    String and pair creation/annihilation

    I wouldn't disagree more. It's better we say there is no true stationary vacuum. From what we know of fluctuations even when we consider a space or point mass momentarily at rest, we can say argue that the vacuum itself is fluctuating. The fluctuation creates energy and we all know particle...
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