Posts Tagged ‘ultraviolet’

The ABCs of UV rays

Written by admin on . Posted in Seniors, Special Sections

Q:There are lots of sunblocks out there with SPF numbers on them. What exactly do these numbers mean? A. Sunblocks—or sunscreens—work to prevent the damage of ultraviolet (UV) rays, an invisible component of sunlight. There are three types of UV rays: UVA, UVB and UVC. UVA is the most abundant of the three ultraviolet rays [&hellip
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