What does "intensity of light" mean? - Physics Stack Exchange
Jul 14, 2018 · Intensity here probably is intended to mean energy intensity- as in how luminous/energetic that light is. I feel like when your professor says "number of photons per …
What is the formula for the intensity of light, and how are …
May 17, 2018 · What is the formula for the intensity of light, and how are amplitude, frequency and number of photons considered? Ask Question Asked 7 years, 6 months ago Modified 3 years, …
Light: Intensity vs Brightness - Physics Stack Exchange
Oct 19, 2020 · Intensity is the power per unit area; it is a physical quantity. Brightness involves how the human visual system perceives light, and it is not a physical quantity.
Is the intensity of light ONLY dependent on the number of …
Dec 5, 2020 · To summarize, the intensity is proportional to the number of photons, but the probability of the exact number of photons depends on the temperature. Therefore the …
How the intensity of light is related to the light wavelength?
Light can be seen as a wave or a particle. Light as a wave is well described by Maxwell's theory. Light energy relates to its wavelength and momentum too. However, if we treat light as a …
What does the amplitude of a light wave tell us? How's it different ...
Jun 19, 2021 · The irradiance of light (Watt per square meter) is directly proportional to the square of the amplitude of the electromagnetic wave. In contrast, the energy of a single photon (the …
Why does the intensity of unpolarized light reduce to half after ...
But I don't understand why the intensity is lowered to half the input's intensity after the first polariser? Depolarised light is actually quite a subtle and tricky concept: I discuss ways of …
Do mirrors increase the amount of light in a room?
This new quantity is called Intensity (watts per area). By putting mirrors in the room you never change the total "Power", the energy coming out of the light bulb in a certain amount of time. …
Relation between intensity of light and amplitude of electric field?
Feb 16, 2016 · A question in my textbook involve finding the electric field amplitude at a point in space given the intensity of light. It uses the following equation to solve it:
optics - Why does light reflect more intensely when it hits a …
At a high angle of incidence this wave needs to have a high intensity. At a low angle of incidence, the wave needs a lower intensity. At higher intensities, more of this "reflecting wave" is going …