An x-ray beam of a certain wavelength is incident on a
An x-ray beam of a certain wavelength is incident on a crystal, at 31.3° to a certain family of reflecting planes of spacing 41.4 pm. If the reflection from those planes is of the first order, what is the wavelength of the x rays in nanometers?
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a thin layer of fluid to be identified by its index of refraction is poured into a very shallow container the bottom of
an x-ray beam of a certain wavelength is incident on a crystal at 313deg to a certain family of reflecting planes of
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