| − | UVA causes sunburn, UVB causes skin damage, and UVC cuts right through most protections (clothing, sun block, etc. and damages sub-dermal tissue and DNA. UVC is the weakest, UVA is s little stronger, and UVC is the strongest. Does the ozone layer really only block UVB? UVB can be blocked by a sheet of paper, so I expect the ozone does more than that. Does anyone know? | + | UVA causes sunburn and tan, UVB causes surface skin damage and tan, and UVC cuts right through most protections (clothing, sun block, etc. and damages sub-dermal tissue and DNA, without causing tanning. UVC is the weakest, UVA is s little stronger, and UVC is the strongest. Does the ozone layer really only block UVB? UVB can be blocked by a sheet of paper, so I expect the ozone does more than that. Does anyone know? |