Every story and comment from the Hacker News API, in a layout borrowed from 2001.
A comment on Why are plants green? To reduce the noise in photosynthesis. Parent comment
Ultraviolet B UV‑B 280–315
Ultraviolet C UV‑C 100–280
[1] https://en.wikipedia.org/wiki/Ultraviolet
My read is "UVB" is the popular medicine way of saying UV is needed for the body to synthesize vitamin D. It was not considered necessary to point out part of the useful spectrum is in "UVC" territory.
There are no comments on this comment yet.
Ultraviolet B UV‑B 280–315
Ultraviolet C UV‑C 100–280
[1] https://en.wikipedia.org/wiki/Ultraviolet
My read is "UVB" is the popular medicine way of saying UV is needed for the body to synthesize vitamin D. It was not considered necessary to point out part of the useful spectrum is in "UVC" territory.