PHY 102 Lecture Notes - Lecture 11: Cool Air, Air1, Total Internal Reflection
Document Summary
In geometrical optics wavelengths are much smaller than the objects/obstacles . Virtual images mirror; results from the reflection of light. Rays appear to come from a point behind the mirror (image point: although rays appear to diverge from this point, rays do not actually come from this point. The distances to the mirror of the image = the object. Real images light comes from the object directly. Seeing your friend image presented in your own eye. Direction of em wave (propagation direction = ray direction) Light in a uniform medium has straight lines ignore wave-like properities: assume wavelength = 0. >> d: opening behaves as a point source of light. << d: red light ( = 700nm) is incident on barrier with opening d = 1cm. Reflection law: mirror (smooth, smooth = surface variations are << , angle of incidence = angle of refraction i = r.
