RECENTLY we have obtained transmission patterns from graphite powders in which prominent extra rings appear ; owing to insufficient resolution these have hitherto escaped notice. Two of these rings ...

“The powder method has gained a new importance in neutron diffraction owing to the general lack of large specimens for single-crystal methods”. With this brief opening sentence of his landmark paper ...

Electron diffraction is a powerful analytical technique used to study the atomic structure of materials. It involves the interaction of a beam of electrons with a crystalline sample, resulting in a ...