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Blue Night Sky Light Bulb Illustration Light Bulb Blue Light Bulb Yellow Stars Png Transparent Clipart Image And Psd File For Free Download Blacklight blue bulbs a blacklight blue bulb is a light bulb that purposely blocks almost all visible light from leaving the bulb, so you're left with but they can cause items to fluoresce, or glow, and this is why we get a fluorescent effect from these bulbs, which are often used in night clubs or at parties.
