CHEM 1A Chapter Notes - Chapter 7.1-7.2: Photon
Document Summary
3. 0 x 108 m/s speed amplitude vertical height of crest determines light"s intensity greater amplitude of electric and magnetic waves wavelength ( ) distance between adjacent crests energy of wave depends on wavelength and amplitude frequency (v) number of crests that pass through stationary point in given period of time (s 1) related to speed of light v = c/ visible light wavelength determines color white light spectrum of wavelengths. 2 slits + interference (cid:224) interference pattern (2 new waves interfere (cid:224) bright and dark line pattern) photoelectric effect observation that metals emit electrons when light shines on them (classical model) dislodge electron if enough energy is transferred to electron, also lag time if a dim light is used (need to transfer sufficient energy) experimental results: threshold frequency, no lag time with low intensity light as long as above threshold light energy in packets: e = hv, h = 6. 626 * 10 34 j s.
