UV-A


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Related to UV-A: UV index

UV-A

or

UVA

abbreviation for
(General Physics) ultraviolet radiation with a range of 315–380 nanometres
References in periodicals archive ?
For example, an ideal UV-A meter would have a constant responsivity from 315 nm to 400 nm and no response outside of this region.
These errors shown are the relative differences in the ratio of the total signal from the UV meter for each source compared to the ratio of the actual UV-A in each source.
National Laboratory is now demonstrating clearly identifiable damage to DNA--both in bacteria and in human cells--irradiated with the longer wavelengths known as UV-A.