[karmakaze]

[0] https://www.skincancer.org/risk-factors/uv-radiation/

> Two types of UV light are proven to contribute to the risk for skin cancer:

> Ultraviolet A (UVA) has a longer wavelength. It is mainly associated with tanning and skin aging but can also lead to sunburn.

> Ultraviolet B (UVB) has a shorter wavelength. It is mainly associated with sunburn.

[nom]

Yes but the letters don't stand for that. There is also UVC. We simply separated it into three ranges due to the different physical interactions and called it A B C.

[karmakaze]

Happy accident.