UV 400 shows eye protection that is augmented to prevent exposure of your eyes to UVA and UVB radiation. One of the outstanding features of the items that are covered with UV 400 is that they can block the light rays as small as 400 nanometers. It thus implies that UV 400 keeps away close to 99.9% of the sun’s harmful radiation from your eyes.
Look at side of thru plastic layer. change sides of panel. The UV side is the side where the plastics glows the most. The Non UV side will not glow much at all. Think a 365 nm would do better since the sheets reject UV beginning at 400 and the 395 nm flashlights have some output to at least 425 nm.
Sunglasses block the rays from UV or Ultra Violet light. Sunglasses do not block out 100% of UV rays, however. Some acrylic materials are made specifically to block ultraviolet rays.
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does plexiglass block uv light
