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If the wavelength of the x rays is 0.155 nm, what is the lattice spacing in...

If the wavelength of the x rays is 0.155 nm, what is the lattice spacing in a crystalline sample if the crystal strongly reflects x rays at an incident angle of 51.7∘ in the first order? Finding d.

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By using bragg's law the distance between crystals could be found.

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