Is it possible to see an infinite distance in a vacuum, or is this prevented by dispersion?
2842
Photons from stars--how do they fill in such large angular distances?
38703
Do virtual particles actually physically exist?
10781
Accelerating particles to speeds infinitesimally close to the speed of light?
147803
Why does vacuum have a nonzero characteristic impedance towards electromagnetic radiation?
50575
Collisions in space/vacuum
64373
Would a pendulum swing indefinitely in a frictionless vacuum?
101152
Can vacuum fluctuations change the position of an electron?
52102
Do electrostatic fields really obey "action at a distance"?
148726
Are we living in a false vacuum? Is there any way to tell?
11130
Is it (theoretically) physically possible to project an image into thin air?
47028
Is the wavefunction of particles inside a gas spread or localized?
112965
Are virtual particles limited by the speed of light?
26329
Is there a shape with infinite area but finite perimeter?
20427
Is there an infinite amount of wavelengths of light? Is the EM spectrum continuous?
7332
Is the double-slit experiment typically carried out in a vacuum?
89290
Why "vacuum" in vacuum Rabi splitting (VRS)?
2657
Can energy be taken out of the QFT vacuum?