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For refraction to occur, there must obviously be two different substances that are both transparent to the radiation or waves under consideration. Also, the two substances must have different indices of refraction.
Light must travel from the optically denser medium to the optically less dense one. For total internal reflection to occur, the angle of incidence in the optically denser medium must be greater than the critical angle of that medium. The critical angle is that angle of incidence in the optically denser medium for which the angle of refraction is 90o.
No matter what the mass is, there are two conditions for equilibrium:The sum of forces on an object must be zero.The sum of torques on an object must be zero.For actual calculations, each of these conditions usually translates to three separate equations.
The air must be warmer than what it is touching and there must be moisture in the air.
Different density than the first medium.
For refraction to occur in a wave, the wave must enter a new medium at an angle.
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For refraction to occur, there must obviously be two different substances that are both transparent to the radiation or waves under consideration. Also, the two substances must have different indices of refraction.
this angle is called the critical angle of a substance. To work it out you must know the refractive index of that substance.
Variation must exist.
idk
.There must be at least two parties involved.
poo on bread
1. You must be gay. 2. You must love bum. 3. Must eat poo 4.
All organisms must reproduce.
Light must travel from the optically denser medium to the optically less dense one. For total internal reflection to occur, the angle of incidence in the optically denser medium must be greater than the critical angle of that medium. The critical angle is that angle of incidence in the optically denser medium for which the angle of refraction is 90o.
Mutation cannot occur. Apex