[填空题]
If a soap bubble is 120 nm thick, what gi(o, ad 18es 7bz8ap*9mztsowavelength is most strongly reflej(6y7qsl sb, kcted at ths76 sbjq(k,ly e center of the outer surface when illuminated normally by white light? Assume that $n\;=\;1.34$. $\lambda$ = nm ,which is an -
