why can you not look at a welding flare with your bare eyes but can look at it on tv without eye protection?

Question

why can you not look at a welding flare with your bare eyes but can look at it on tv without eye protection?

In: 0

Answer 1

Welding flare is thermal radiation. The torch gets so hot that it throws off lots of ultraviolet light. UV causes damage to the retina. A TV doesn’t output UV light, so there’s no risk of retina damage.