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 | Lec 30 | MIT 8.02 Electricity and Magnetism, Spring 2002 one value of theta between this sheet and this sheet, so this is now the new intensity, and it's all polarized in this direction. And this law, whereby the light intensity is reduced by the factor cosine square theta, is known as Malus' Law. Malus' Law. If theta were 30 degrees, the light intensity here would be one-half I0 times the cosine square of 30 degrees, which is 0.75. If theta were 0 degrees, that means that this sheet is in the same direction as this one, if everything were ideal ... |
 | Lec 4 | MIT 8.02 Electricity and Magnetism, Spring 2002 infinity to R, to R to infinity, this is the same. This is one and the same thing. Let's calculate this integral because that's a little easy. We know what the electric force is, Coulomb's law, it's repelling, so the force and dR are now in the same direction, so the angle theta between them is zero, so the cosine of theta is one, so we can forget about all the vectors, and so we would get then that this equals Q one, Q two, divided by four pi epsilon zero. And now I have downstairs here an ... |
