Recent content by drhassan

in general the refractive index is equal to the sqrt(dielectric constant), but you have to notice the frequency dependence as mentioned by nasu (the previous Post)

the degrees of freedom of a CD, three for position and one for rotation, which means it has four degrees of freedom

to know whether you answer right or not, substitute back x=3/2 and y=11/2 in your equations and the answer should be 2(11/2) - 4(3/2) - 5 =11-6-5= 0, which means you have the right answer

1) How photons can interact with charged particles when they are uncharged themselves. Also in the same regard according to my (school) textbooks light is an electromagnetic wave. But it also says that photons are uncharged and light is made of (a stream?) photons. Answer: First of all, we...