Question

Expression for distance between adjacent plane in cubic crystal

Answer 1

Explanation:

it should give you an idea, anyway. For example, consider the first picture in the first row: (l,m,n)=(1,0,0)(l,m,n)=(1,0,0) in that case, and it is easy to verify that the distance between the grey planes is

d=ad=a

In the second case, (l,m,n)=(1,1,0)(l,m,n)=(1,1,0), and you can see that

d=a2–√

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