5 lecture 4 p 9 act 1 light of different wavelengths

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Unformatted text preview: ome butterfly wings! The material in the wing in not pigmented! The color comes from interference of the reflected light from the pattern of scales on the wing– a grating with spacing of order the wavelength of visible light! (See the text Young & Freeman, 36.5) Lecture 4, p 9 ACT 1 Light of different wavelengths is incident on a multi-slit diffraction grating. Which color will have the largest separation between the different principal maxima? y θ d a. shortest wavelength b. longest wavelength c. all wavelengths have the same spacing between principal maxima L Lecture 4, p 10 ACT 1 - Solution Light of different wavelengths is incident on a multi-slit diffraction grating. Which color will have the largest separation between the different principal maxima? y θ d a. shortest wavelength b. longest wavelength c. all wavelengths have the same spacing between principal maxima L The angle to nth principal maximum is given by: d sin θn = n λ. Therefore, bigger wavelengths will have larger...
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