A uniform film of a material that has index of refraction 1. 30 covers the front surface of a pane made of glass with index of refraction 1. 55 . When a beam of monochromatic light initially traveling in air strikes the film at normal incidence, the minimum film thickness for which the light reflected from the air-film interface and the light reflected from the film-glass interface cancel is \(123 \mathrm{~nm}\). What is the energy of each photon in the light beam?