In the previous chapter, you’ve already encountered vectors k and g and seen that they have lengths with units Å−1 or nm−1. These vectors are referred to as reciprocal lattice vectors. Now we are going to discuss what this reciprocal lattice is. The reciprocal lattice is simply a lattice in reciprocal space. Note that this lattice is just as real as the “real lattice” in “real” space. It’s like a new world in Gulliver’s Travels but the relationship to “our” world is not a linear scaling factor but a reciprocal one. If something (an object or a length) is large in real space, then it’s small in reciprocal space.
KeywordsReal Space Reciprocal Lattice Reciprocal Space Reciprocal Lattice Vector Bragg Condition
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