Lasers Were Flying

Both C and E Blocks worked on their lab investigations that let them explore diffraction and its relation to wavelength and configuration of the diffraction grating. They used diffraction to determine the wavelength of two different laser pointers and to determine the slit separation of a mystery grating. We'll go over the lab in class tomorrow before embarking on our review for Thursday's test. B and F Blocks finished up their discussion of diffraction (E Block finished theirs before their lab investigation) and linked that material with yesterday's work on interference. The homework problems will use the same formulas as for the interference problems, but you will have to determine slit separation using the #lines/cm property of the diffraction gratings. We'll run through these tomorrow for any questions before reviewing for Thursday's test.