What’s the difference between UVA and UVB rays?

Question

What’s the difference between UVA and UVB rays?

In: 1

Answer 1

What’s the difference between red and green light?

Red has a longer wavelength. Less energy per photon.

Similarly, UVA has a longer wavelength than UVB. Both are still higher energy than visible light. And like visible light, different materials can absorb one of them more than the other.