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| X-rays, What Are They? 6:7 | X-rays, What Are They? 7:7 » | |
X-rays, What Are They?More About the Bragg Formula |
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X-rays scattered from different layers of atoms can interfere with each other. The interference depends on the wavelength of the X-ray and on the distance between the atom layers. An X-ray with well-known wavelength can be used to explore the structure of the crystal. For a well-known crystal, the X-ray properties can be examined. |
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| Crystal planes, in NaCl, ordinary salt. Other planes are also possible. |
X-ray scattering from three
crystal planes, separated by the distance d. For
constructive interference in a direction |
Related Laureates |
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 The Nobel Prize in
Physics 1915 - Sir William Henry Bragg
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 The Nobel Prize in
Physics 1915 - William Lawrence Bragg
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the path difference must be an even number of
wavelengths.