Recent content by roeber

Ah, good; that's what I had guessed from what I could find online, but once I started wondering about this, I realized I had never actually seen a definition. Thanks!

I'm building a chandelier, and in one part I specifically want the "speckle effect": I shine a laser into a flask of foggy, translucent liquid, and it glows with those beautiful diffraction speckles. This works when I shine an ordinary red or green laser pointer into the flask. However, when...