Basic Maths for Protein Crystallographers | |

Lattice geometry |

Diffraction from a crystal lattice is visible at discrete points conveniently indexed as an integer triple
(h,k,l), or in vector notation as
h**a ^{*}**+k

a^{*}·a=b^{*}·b=c^{*}·c= 1a^{*}·b=a^{*}·c=b^{*}·c= 0

*i.e.* **a ^{*}** is perpendicular to

where **c** and **c ^{*}** lie vertically in the plane of the drawing, and