First observation of positronium matter-wave diffraction with a graphene grating

First experimental observation of matter-wave diffraction in a short-lived electronpositron atom using a graphene-based ...
Hackaday

Iridescent Rainbow Chocolate, Just Add Diffraction Grating!

Here’s a great picture from [Jelly & Marshmallows] that shows off the wild effects of melted chocolate poured onto a diffraction grating. A diffraction grating is a kind of optical component whose ...