A very important property of a ghkl
vector is that its magnitude (length) is 1/dhkl
where dhkl is the spacing of the (hkl) planes. You can study the proof for this
here. In a crystal of any structure, ghkl is normal to the (hkl) plane and has a length
inversely
proportional to the interplanar spacing of the planes.
Drag
the top white left-hand corner of the lattice shown opposite and resize the lattice
to change the spacing of the green planes shown. Notice the effect on the length of
the ghkl
reciprocal vector.
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