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Feb
7
comment How can space and time occur spontaneously?
Having read the book, I can say that Krauss explains everything fairly thoroughly. Can you provide the actual portion of the book that confuses you?
Feb
3
comment Why can't electrons leave negatively charged objects in a vaccum?
It does. It does. There doesn't.
Feb
3
comment Antimatter transmission
It's already possible to transmit electricity without any loss: en.wikipedia.org/wiki/Superconductivity. I suggest you focus your research efforts on room-temperature superconductors. Your antimatter won't travel very far unless it's in a vacuum.
Sep
21
awarded  Nice Answer
Sep
16
revised Could the black hole in the center of the galaxy be a white hole?
added 40 characters in body
Sep
16
revised Could the black hole in the center of the galaxy be a white hole?
deleted 8 characters in body
Sep
16
answered Could the black hole in the center of the galaxy be a white hole?
Aug
9
comment If an object's motion through space-time at speed $c$ corresponds to ageing, would cooling it down to slow ageing mean it doesn't move at $c$?
A particle traveling at $c$ doesn't experience any proper time, so the idea of "aging" doesn't apply to it...
Aug
2
comment Exploding planets and entropy
...no more unusual than a cloud of water vapor evaporating from the ground, and coming back down as rain.
Jul
5
awarded  Yearling
Jul
5
awarded  Yearling
May
25
comment Alternatives to electromagnetism for communication?
you mean... "sound"?
Jan
11
comment Nothing can travel faster than the speed of light. In what frame of reference?
What does your frame of reference move relative to?
Dec
19
awarded  Quorum
Oct
31
answered Photon “stuck” on the event horizon of a black hole
Oct
31
comment Electron in strong magnetic field
The premise is not correct. If we try to artificially confine the electron to a precise position, then its momentum will become completely uncertain (precisely because of the uncertainty principle), and it will necessarily escape from confinement.
Oct
30
comment Does someone falling into a black hole see the end of the universe?
Additionally, this excellent web page describes transformations from Schwarzschild coordinates to KS (among others), and includes animated GIFs of morphing between the two coordinate systems, which helps tremendously with intuition.
Oct
28
comment Time difference in transmission of AC and DC
If you're asking if AC is more efficient than DC for power transmission, then you should state that in the question! There's certainly plenty of material about this on the web.
Oct
28
comment Time difference in transmission of AC and DC
If I shine two flashlights at you, one with a constant beam, and the other with a pulsating beam, which beam would you see first?
Oct
28
comment Time difference in transmission of AC and DC
Per our discussion in Meta, this is a good example of a question that is not very clear, seemingly random, and totally unresearched.