PHYS 1C Chapter Notes - Chapter 27: Chapter 27, Angular Distance, Diffraction Grating
Document Summary
Interference occurs when combining the electric and magnetic fields that constitute the individual waves: coherent interference: when individual waves maintain a constant phase relationship with one another. Incoherent interference: when 2 separate wave sources are placed side by side; these independent sources can undergo random changes in small amounts of time (cid:1006)(cid:1011). (cid:1006) you(cid:374)g"s dou(cid:271)le-slit experiment. Constructive interference occurs when the distance the waves travel to the viewing screen differs by a factor of one wavelength. Destructive interference occurs when the distance the waves travel to the viewing screen differs by a factor of half a wavelength. Max occurs with the red bright fringe. Quantitative description of the double-slit experiment if l is much greater than d, the 2 paths are very close to being parallel, and you can use a simplification model in which the 2 paths are exactly parallel. = r2 r1 = dsin: the path difference. Imax = the intensity at point o (central bright fringe)
