The molecules in the rods and cones in the eye are tuned to absorb photons of particular
Chapter 28, Problem 24(choose chapter or problem)
The molecules in the rods and cones in the eye are tuned to absorb photons of particular energies. The retinal molecule,like many molecules, is a long chain. Electrons can freely movealong one stretch of the chain but are reflected at the ends, thusbehaving like a particle in a one-dimensional box. The absorptionof a photon lifts an electron from the ground state into thefirst excited state. Do the molecules in a red cone (which aretuned to absorb red light) or the molecules in a blue cone (tunedto absorb blue light) have a longer "box"?
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