 Compact disc bronzing

Compact disc bronzing is a phenomenon that occurs in some optical discs, particularly CDs, where they develop a bronze or gold tint on their surface. This discoloration is often a sign of deterioration due to oxidation or degradation of the disc materials, specifically the reflective layer. The bronzing effect may be caused by several factors, including: 1. **Material degradation**: The dye used in the recording layer of the CD can degrade over time, especially when exposed to moisture, heat, or light.