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What Are The Uses Of Ultra-violet Rays?

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It does not loss the color of skin. Improves skin time . That it
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# 230-400 nm: Optical sensors, various instrumentation
# 230-365 nm: UV-ID, label tracking, barcodes
# 240-280 nm: Disinfection, decontamination of surfaces and water (DNA absorption has a peak at 260 nm)
# 250-300 nm: Forensic analysis, drug detection
# 270-300 nm: Protein analysis, DNA sequencing, drug discovery
# 280-400 nm: Medical imaging of cells
# 300-400 nm: Solid-state lighting
# 300-365 nm: Curing of polymers and printer inks
# 300-320 nm: Light therapy in medicine
# 350-370 nm: Bug zappers (flies are most attracted to light at 365 nm)

Source en.wikipedia.org
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Things and other things

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