Ex Bibliotheca

The life and times of Zack Weinberg.

Tuesday, 7 June 2005

# 10:20 PM

While burning CDs the other day I got a coaster of a type I've never seen before. Here are two photos of the bottom: somewhat brighter and somewhat darker.

See all the little circles etched onto the surface? They weren't there before the CD was burned. Somehow the laser did that. Does anyone know how that could have happened? They're not on the data layer, they're on the surface of the polycarbonate, and there's an odd sort of a pattern to them.