A: UVC radiation is a known disinfectant for air, water, and nonporous surfaces. UVC radiation has effectively been used for decades to reduce the spread of bacteria, such as tuberculosis. For this reason, UVC lamps are often called "germicidal" lamps. UVC radiation has been shown to destroy the outer protein coating of the SARS-Coronavirus Due to its shorter wavelength, UVB light is more easily blocked by window glass. However, the longer UVA wavelengths require additional protective measures to avoid passing through the glass. Research has found that while the front windshield blocks 94 percent of UVA rays, the driver's side window only blocked 71 percent. To date, multiple Place 3-5 UV-sensitive beads in two small plastic bags. These beads will turn color in the presence of UV light. The higher the intensity of UV light the stronger the color change. Make two bags: one labeled “Control” and one labeled “Experiment”. Record the color of the beads when exposed to indoor light (lighting in the lab).
Normal glass is fairly opaque to the UVB band, blocking nearly 100% of it, which is the UV band usually considered to be the most damaging to your skin. Normal glass is mostly transparent to UVA (to 330 nm), allowing 80% of the band’s radiation to pass through (UVA penetration is needed for water purification).
Plexiglas® sheet absorbs short wavelength ultraviolet (UV) energy, but transmits most of the long wavelength UV (those wavelengths just short of the visible region). The total uv energy absorbed is about 65%. This unsurpassed UV stability gives Plexiglas® MC and G sheet superb weatherability and makes it the logical choice among plastic
UVA radiation can cause distinct plant responses to those elicited by UVB radiation and blue light , because the action spectra of different plant photoreceptors pass through the UVB (UVR8) and UVA (cryptochromes, phototropins, and zeitlupe proteins) wavebands. The distinct functions of these photoreceptors may be responsible for some of the
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    • can uvb pass through plastic