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Jan
9
comment Some applications of the Einstein-Podolsky-Rosen (EPR) paradox?
The Mermin-Peres magic square game?
Jan
9
comment Why are gasses difficult to see?
Yes, but: there isn't that wide a range for which photochemical sensors can work, and the atmosphere is transparent enough over most of this range. Vision at other wavelengths, like snake pits, has very low resolution.
Jan
9
revised Why are gasses difficult to see?
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Jan
8
comment what is the electric field intensity inside a charged metallic shell if there is a point charge inside the shell?
You are right but it's the charges that appear at the surface are not the same charges you put in. If you put in a bunch of a + charge calcium ions, electrons will leave the surface to give it a positive charge. No calcium ions need to make it to the surface.
Jan
8
comment Is a suit that hides a soldier's heat signature fundamentally possible?
Yes these would need power, but with enough energy could be done.
Jan
8
comment Is a suit that hides a soldier's heat signature fundamentally possible?
Evaporation of water can keep the suits surface at ambient temperature, just as we keep cool when it gets hotter outside than our body temperature.
Jan
8
answered Why are gasses difficult to see?
Jan
8
comment Do objects launched from Earth retain the Earth's lateral inertia (67,000mph)
The voyager was helped by this, otherwise it would have fallen into or near the sun and gotten incinerated. Orbital mechanics are more complex when you consider the influence of the suns gravity, but it still starts out with the 67k boost.
Jan
7
answered Polarization in blackbody radiation
Jan
7
asked only one material (meta)stable at extreme pressures?
Jan
4
comment Resource cost and noise effects in quantum teleportation of multible (entangled) qbits
I guess its not obvious it will work because you have to observe each qubit you get, and observing a qubit will destroy entanglement with other qubits. But somehow it does not.
Dec
30
accepted Resource cost and noise effects in quantum teleportation of multible (entangled) qbits
Dec
29
comment Why are crystals so useful for quantum isolation?
So crystal periodicity is conducive wave function coherence, it seems.
Dec
29
accepted Why are crystals so useful for quantum isolation?
Dec
29
comment Resource cost and noise effects in quantum teleportation of multible (entangled) qbits
That answer is exactly what I was looking for. Do you have references?
Dec
28
asked Why are crystals so useful for quantum isolation?
Dec
24
asked Resource cost and noise effects in quantum teleportation of multible (entangled) qbits
Dec
18
comment What's the escape velocity of Naked Singularities?
Imaginary escape velocity simply means that particles placed there will shoot outward to infinity (an another universe, perhaps?). The RN singularity is REPULSIVE. That being said, anything within the inner horizon isn't thought to be RN geometry, as "mass inflation" results.
Dec
12
revised Why does pressure act as a source for the gravitational field?
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Dec
12
revised Why does pressure act as a source for the gravitational field?
deleted 39 characters in body