Abstract
IT is now well known that a homogeneous pencil of X-rays is capable of reflection by a crystal provided that the rays are directed upon the crystal at the proper angle.1 If λ is the wave-length of the X-rays, d the spacing of the crystal planes, and θ the angle which the rays make with the planes, these quantities are connected by the relation nλ=2dsinθ,2 where n is an integer.
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References
A summary of the principles on which this experiment is based, and of the progress of its development may be found in NATURE of July 9, 1914 p. 404.
See Proc. camb. Phil. Soc., November 11, 1912, or Proc. Roy. Soc., April 7, 1913.
From a book now in the press, to be published by Messrs. and . G. Bell and Sons .
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The X-Ray Spectrometer . Nature 94, 199–200 (1914). https://doi.org/10.1038/094199a0
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DOI: https://doi.org/10.1038/094199a0
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