Drakkith
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JohnnyGui said:Just looked it up and it makes sense now to me. However, I noticed from several sources (like here and here) that when they explain interference in a soap bubble, they talk about a single wavelength (band) that reflects from both the outer and inner layers of the bubble, resulting in either destruction or construction of that wavelength. Isn't it possible at all for 2 different wavelengths to destruct or construct each other, or will this only lead to additive mixing?
No, it turns out that different wavelengths don't interfere with each other. Or, if you prefer, it turns out that the EM wave, which is composed of a mix of different wavelengths, interferes with itself in such a way as to behave as if each individual wavelength interferes with itself and no others. As far as I know at least. I know my thin-film hydrogen-alpha filter doesn't behave differently if I'm looking at different sources of light.