Lag1989 task number 21.49

Lag1989 task number 21.49

What is the wavelength λ of monochromatic x-rays falling on a calcite crystal, if the first-order diffraction maximum is observed when the angle between the direction of the incident rays and the crystal face is φ = 3 °? Assume that the distance between atomic planes λ and a crystal is d = 0.3 nm.

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