Linked Questions
13 questions linked to/from Can a black hole form due to Lorentz contraction?
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If a mass moves close to the speed of light, does it turn into a black hole?
I'm a big fan of the podcast Astronomy Cast and a while back I was listening to a Q&A episode they did. A listener sent in a question that I found fascinating and have been wondering about ever ...
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Very Massive Relativistic Body [duplicate]
You're observing a massive object (probably a neutron star), and it is moving at a significant fraction of the speed of light relative to you. The mass of the object is just below the mass necessary ...
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Special relativity and black hole paradox [duplicate]
Today a friend of mine posed me a paradox involving black-holes, one that I couldn't solve.
Suppose we have planet, with a density such that it is almost to the point of turning into a black hole, ...
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"Reality" of length contraction in SR
I was in argument with someone who claims that length contraction is not "real" but only "apparent", that the measurement of a solid rod in its rest reference frame is the "...
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A paradox of length contraction
Suppose the proper length of a train is longer than that of a bridge, and the bridge can't bear the total weight of the train but can bear it partially. As the train goes very fast, it becomes shorter ...
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How would be tv reception in a spaceship travelling close to speed of light?
My little brother has made me a tough question (specially for a computer science engineer).
Imagine that there is a spaceship orbiting earth close at nearly speed of light (say 99%).
Someone in earth ...
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When a high speed neutrino just misses an old neutron star, why isn't it trapped?
Suppose a neutrino is seen travelling so fast that its Lorentz gamma factor is 100,000. It races past an old, no longer active neutron star, narrowly missing it. As far as the neutrino is concerned, ...
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Reference frame of high speed rocket [duplicate]
Imagine a high speed rocket, traveling past a star. In the rocket's reference frame, the star's length is contracted. This is a lot a mass in a thin line, so it the rocket's reference frame, could it ...
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Information density, Bekenstein Bound, and length contraction
Is it possible to observe a region of space that has information density greater than what the Bekenstein Bound will allow when length contraction is involved? I.e. An object travels through the ...
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How should I interpret relativistic mass? [duplicate]
If I have a mass that gets accelerated to a near the speed of light, before it gets I would think its relativistic mass would expand its Schwarzschild radius enough to turn it into a black hole. I ...
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Could photons eventually turn into black holes according to an observer traveling faster and faster towards the light source due to blue shift?
The following question was answered and the answers do make it seem like photons with a high enough frequency, could, in theory, turn into black holes:
How much energy does a photon need to form a ...
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Do relativistic frames imply different realities? [duplicate]
From Einstein's principle of relativity space-time and mass are relative to the frame from which they are being observed.
Now would that mean a ball moving at the speed of light wrt to earth would ...
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Can you help me with this black hole paradox? An object is not a black hole in our reference frame, but it is in a spaceship's [duplicate]
Say we built a cigar the mass of the sun out in deep space, with radius of 1 km, and length of a million miles. A spaceship flies by within a km at an immense speed. No problem, it will zoom down ...
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