Author Topic: Any way to look at HID lamps without getting arc eye?  (Read 1767 times)
RRK
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Re: Any way to look at HID lamps without getting arc eye? « Reply #15 on: April 17, 2024, 02:45:32 PM » Author: RRK
Erythemal radiation and germicidal radiation are two different things. Germicidal radiation (254nm mostly associated to low pressure lamps) just causes strong skin/eye burns and does not induce suntan. It belongs to shortwave UV-C range. Erythemal radiation belongs mostly to UVB and some short end of UV-A, it causes milder sumburn in large doses and induces suntan and vitamin D synthesis.

Yes, regular glass envelope filters out most of shortwave radiation of a mercury lamp, UVA part generally passes but is not considered harmful, though it induces yellowing in many materials.
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