PHYS 103 Study Guide - Final Guide: True North, Electrical Network, Ellesmere Island
Document Summary
Consider 2 waves meeting each other in the same space. Their energies (amplitudes) can add or subtract: this phenomenon is called interference. Crests can add to other crests or cancel with troughs. Diffraction is the phenomenon wherein light waves pass through small openings the ope(cid:374)i(cid:374)gs (cid:272)ause (cid:862)(cid:374)e(cid:449)(cid:863) (cid:449)a(cid:448)es to fo(cid:396)(cid:373) a(cid:374)d these (cid:862)(cid:374)e(cid:449)(cid:863) (cid:449)a(cid:448)es i(cid:374)te(cid:396)fe(cid:396)e (cid:449)ith ea(cid:272)h othe(cid:396) Direct application of interference patterns: the recording of an interference pattern on film, reconstructed with a laser. It is an interference phenomenon caused by two beams a reference beam (coming from a laser), and an object beam (reflects off the object) This interference pattern is burned into the film emulsion of the holographic film. Can be reconstructed when light passes through it again. The negative sign distinguishes particles from each other, in terms of whether they will attract or repel. The actual sign is arbitrarily chosen: the charge of a neutron is 0 c, or neutral.
