How is the darkening of AgCl related to photons?
(a) The different colors of light passing through the filters have different energies or frequencies. In our experiment red and green light were much less effective in causing the reaction than blue or yellow light. Photons of blue or yellow light apparently can be absorbed by the AgCl (are the right energy), causing the conversion to silver metal. (b) The wavelength of the light has to be at most E=hc/wavelength 4 1019 J = (6.6256 10-34 J.s)(3 x 108m/s)/wavelength wavelength = ~500 nm (green light) An energy of about 4 1019 J corresponds to a wavelength of 500 nm. This wavelength of light is in the green region of the visible spectrum. So, we would expect that the green filter would show a very dark Ag spot, but that isnt what was observed on the filter paper! 4.34 Wave and photon phenomena This question requires that you identify the underlying physics of the phenomena (e.g., what causes a rainbow). Dont worry if you couldnt predict these. (a) Light is diffracted by the grooves on th
