# Bragg's law

## English

### Etymology

Bragg diffraction was first proposed by Lawrence Bragg and his father William Henry Bragg in 1913.

### Proper noun

1. (physics, singular only) equates the angle ${\displaystyle (\theta )}$ between the incident and scattered ray to the spacing ${\displaystyle (d)}$ between the crystal planes and the wavelength ${\displaystyle (\lambda )}$ of the radiation - ${\displaystyle n\lambda =2d\sin(\theta )\,}$