Skip to main content
3 votes

Inconvenience of speed of light in optic fiber

This is really engineering more than physics. Vast resources have been expended developing methods of purifying glass to make optical fibers with very low loss. This allows us to have fibers that lose ...
The Photon's user avatar
  • 27.9k
1 vote

Is it possible to see thermal columns?

The refractive index of air is often taken to be one, but in fact it's slightly higher. Under normal conditions it's about $1.0003$. To a good approximation the refractive index minus one is ...
John Rennie's user avatar
1 vote

Amplitude of light in double slit experiment

The amplitude is the square root of the intensity. Which square root? Well, for the double slit experiment you may consider that the bright bands' amplitudes alternate in sign. Positive or negative ...
John Doty's user avatar
  • 21.2k

Only top scored, non community-wiki answers of a minimum length are eligible