1. The problem statement, all variables and given/known data Determine what colors of visible light would be absorbed by electrons in an infinite well, N = 3.1 nm. The effective mass for an electron is one-fifteenth of the standard electron mass. 2. Relevant equations En = n2h2/(8mL2) E = hf f = c/λ 3. The attempt at a solution E1 = 9.4039*10-17 J E2 = 3.7616*10-16 J E3 = 8.4635*10-16 J E4 = 1.5046*10-15 J ΔE1-2 = 70.5 nm ΔE2-3 = 42.3 nm Nothing in the visible.