- #1
ThomasGR
- 1
- 0
Hello,
For reasons I’ve read here in this forum, some material (let’s say PVC or paper) are not transparent to light. But light is an electromagnetic wave. If I lower the frequency, that material is now transparent, even if I cannot detect it with my eyes but must use special equipments, the same if I increase the frequency. It seems only in the bandwidth of visible light, that material in not transparent. Can some one tell me the reasons?
Best regards.
For reasons I’ve read here in this forum, some material (let’s say PVC or paper) are not transparent to light. But light is an electromagnetic wave. If I lower the frequency, that material is now transparent, even if I cannot detect it with my eyes but must use special equipments, the same if I increase the frequency. It seems only in the bandwidth of visible light, that material in not transparent. Can some one tell me the reasons?
Best regards.