1) Beach hazard 2) Skin-damaging rays 3) Sunscreen letters 
ultraviolet light type B, with a wavelength of 290-320; causes reddening and some tanning of the skin
<abbreviation> Ultraviolet B. ... (05 Mar 2000) ... 
ultraviolet B.
UVB is the portion of the UV spectrum that covers the wavelength range between 280nm and 320nm. UVB radiation is typically used in UV curing and photolithographic applications as well as in certain medical applications. Exposure to UVB radiation (from lamps or electric arcs) can cause severe sunburn and cause eye damage.
Type: Abbreviation Definitions: 1. Abbreviation for ultraviolet B.
Ultraviolet B. Strongest during summer, these short-wave rays are the chief culprit behind sunburn, freckles and sunspots, and play a key role in skin cancer and premature skin aging.