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The Epic Interactive Encyclopedia 1998
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Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
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X
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X-ray_diffraction
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1992-09-02
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541b
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14 lines
Method of studying the atomic and molecular
structure of crystalline substances by using
X-rays. X-rays directed at such substances
spread out as they pass through the crystals
owing to diffraction (the slight spreading of
waves around the edge of an opaque object) of
the rays around the atoms. By using
measurements of the position and intensity of
the diffracted waves, it is possible to
calculate the shape and size of the atoms in
the crystal. The method has been used to
study substances such as DNA that are found
in living material.