Assertion: erythemal action spectrum | /r/CapableOf | cover both uv-a and uv-b radiation
Facets:
Source sentences:
text: As the graph shows, the erythemal action spectrum covers both UV-A and UV-B radiation, while the vitamin-D action spectrum refers mostly to UV-B and the DNA-damage action spectrum to even shorter wavelength, i.e. harder, UV-B. (UV-C radiation does not reach the Earth's surface.)