Hi all! A question I've had for a while: On the surface of the Moon, while under direct sun radiation, is there any way of cooling up an object? There appears to be no natural sh …

Hi, I'm trying to make a connection between physical description of light (involving wave lengths, Poynting vector and energy density) and radiometric quantities:] Radiant energ …

Since the speed of light changes as it passes through a medium, it makes me wonder whether it changes the frequency at all? Since E = hf, if this is the case, then the energy would …

There are at least two different situations. If you have N-2 middle maximums, the amount of slits is N. Please, see the bottom left picture. The case with no such thing is the ques …

The pattern is on the right side. ALERT I am uncertain whether an err is in measuring slit width or distance btw slits. Formulae Slit width -formula b=n \lambda L \frac{v_{p}}{v …

I heard that the color red has a frequency of 43 trillion hz, and if you divide that by 2 over and over until you get a hz range that's audible to the human ear you could find the …

For example , optical carrier in the infra-red region can provide higher capacity than microwave.