Diffraction Lecture 13: Bragg's Law and Laue's Equations

In this lecture we examine the geometric conditions that lead to diffraction of X-rays by crystals. First, we derive Bragg's Law, which gives the angle at which the scattered X-rays constructively interfere if the X-rays are partially reflected from parallel planes in a crystal. Next, we consider scattering in the forward direction (transmission) of an incoming beam of X-rays by a one-dimensional crystal, which gives Laue's equations.

[reesecaliman]

Thank you, finally I see more where these come from 🙏
My teaching materials just kind of skipped the geometry lol

[valeriereid]

Excellent! This most certainly helped.

[ETHAN-ecpb]

Great teaching mode, thank you so much!

[studysawa]

Amazing content, made things clearer, thanks a lot

[sherzadakhan]

Why do crystals have spacing between crysral planes.

[gennadymedvedkin]

6:35 The dashed line 2-4 is not actually perpendicular to the scattered wave. The perpendicular should be corrected a little(!)