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When current is run through a hydrogen lamp it glows specific wavelengths. The two primary wavelengths...

When current is run through a hydrogen lamp it glows specific wavelengths. The two primary wavelengths where light is emitted are 486nm (blue) and 656 nm (red). You use this light to illuminate a diffraction grating with 500 lines/mm located 1.50 m from a screen. What is the distance between the blue and red fringes? Which is closer to the central maximum?

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