Question: Suppose we expose a material to light and observe whether the material is transparent to that particular wavelength. We try to following wavelengths: Color

Suppose we expose a material to light and observe whether the material is transparent to that particular wavelength. We try to following wavelengths: Color Wavelength (nm) Passes through material Red 650 Green 550 Blue 450 yes yes 1) What is the best upper bound to the electronic gap? That is, what is the smallest energy that from this information you know the gap is lower than or equal to? Submit 2) What is the best lower bound to the electronic gap? That is, what is the largest energy that from this information you know the gap is greater than? eV eV

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