Write a hypothesis about the affect of the diffraction grating line spacing on the diffraction angle. use the "if . . then . . because . ." format and be sure to answer the lesson question, "how does diffraction occur? " refer to the variables.

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.