UVA was talked about sometimes at the sunbed manufacturer I worked for.You won't aquire a tan from UVA
FWIW: Here's a (qualitative) 'breakdown' as it were (by decreasing wavelength / increasing energy)
UVA -- Special effects, some forensic applications
UVB -- Tanning and other dermatological applications
UVC --- Germicidal lamps, UV-EPROM erasers...
UVD --- Ozone generators
EUV --- Low energy radiography (e.g. crystallography, mammography, etc..)
UEUV --- 'Standard' medical diagnostic and radiotherapy 'X-Rays'
Best regards
HP
It must have stuck in my mind because of that.
Maybe a customer got overdone and went to trading standards with accusations of the wrong kind of UV.
Sunbed sales were declining rapidly and the line was being wound down. My main responsibilities were with the faradic muscle excercisers and a gizmo for pulling out hair follicles with tweezers fed with RF - Oh... and an iontophoresis gadget for drawing out cellulite.