Malus's Law
where is the intensity of the light incident on the polarizer, and is the angle of the light's polarization with respect to the polarizer(i.e., let the light be polarized at and the polarizer be , then )
Note this implies that for unpolarized light incident on a polarizer, you must average over all angles. This means 1/2 of the intensity of unpolarized light gets through.
The Three Laws of Thermodynamics
1. Energy cannot be created or destroyed:
where U is the internal energy, Q is heat, W work.
2. There is no process who's sole effect is to transfer heat from a hot body to a cold body. Another way to put it is that no engine can convert energy from a heat reservoir entirely into mechanical energy.
Mathematically:
3. Entropy is zero at absolute zero.
where U is the internal energy, Q is heat, W work.
2. There is no process who's sole effect is to transfer heat from a hot body to a cold body. Another way to put it is that no engine can convert energy from a heat reservoir entirely into mechanical energy.
Mathematically:
3. Entropy is zero at absolute zero.
Flashcard set info:
Author: CoboCards-User
Main topic: Physics
Topic: GRE
School / Univ.: UC Santa Cruz
City: Santa Cruz, CA
Published: 20.10.2015
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