Recent content by DragonSpear

your question is about the refraction of light from the glass to the liquid and for the critical angle you gotta get an angle of incidence that makes the refractive angle 90 so yes they are supposed to go with the boundry

In a magnifying glass, the lenses are always circular. I don't understand why because no matter what shape the lense is, it doesn't deny its physical properties and refraction would still occur, so why are they so consistent on making circular lenses. I predicted that circular lenses may be...