3
votes
2answers
779 views

How does the wavelength change in relativistic limit?

In the text, it reads that the momentum of a particle will change if it is moving at speed close to light speed. In the general case, the wavelength is given as $$ \lambda = \frac{h}{p} $$ and $$p ...
2
votes
3answers
4k views

Is all kind of light same speed?

Is there any speed different between blue or red color? Is there speed different? or there are same speed?
7
votes
3answers
42k views

Why does wavelength change as light enters a different medium?

When light waves enter a medium of higher refractive index than the previous, why is it that: Its wavelength decreases? The frequency of it has to stay the same?