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While researching the use of laser pointers, you conduct a diffraction experiment with two thin parallel slits. Your result is the pattern of closely spaced bright and dark fringes shown in Fig. 𝐏 3 6 . 6 1 . (Only the central portion of the pattern is shown.) You measure that the bright spots are equally spaced at 1.53  mm center to center (except for the missing spots) on a screen that is 2.50  m from the slits. The light source was a helium-neon laser producing a wavelength of 632.8 nm. (a)
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