A red beam is passed through a solution of gum mastic but a blue beam is not. 6F40.30 color of smoke L-100 Cigarette smoke is blue, but after exhaling is white. 1000 6F40.50 microwave scattering 33-7.17 Show scattering of microwaves with a dielectric dipole inserted in the beam. Look at a point source lamp through a fogged microscope slide. A glass plate covered with dust is held in a beam that converges into a hole in a screen.
Circular halos appear on the screen around the hole.