« on: Today at 09:56:52 »
Quote from: hamdani yusuf
interface between vacuum and glass...we should receive low frequency beatTo get a low frequency beat, you have to mix two frequencies together, in the same, non-linear medium.
- Vacuum and glass are not the same medium - they are two different media
- Vacuum is very linear (up to E field strengths that were only recently achieved), and common types of glass are pretty linear (provided you don't start melting it)
So I wouldn't expect to see beat frequencies, or that they would cause refraction.