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2. Blacklight - Wikipedia

   en.wikipedia.org/wiki/Blacklight

   A blacklight, also called a UV-A light, Wood's lamp, or ultraviolet light, is a lamp that emits long-wave ultraviolet light and very little visible light. [ 1 ] [ 2 ] [ 3 ] One type of lamp has a violet filter material, either on the bulb or in a separate glass filter in the lamp housing, which blocks most visible light and allows through UV ...

3. Ultraviolet - Wikipedia

   en.wikipedia.org/wiki/Ultraviolet

   Halogen lamps with fused quartz envelopes are used as inexpensive UV light sources in the near UV range, from 400 to 300 nm, in some scientific instruments. Due to its black-body spectrum a filament light bulb is a very inefficient ultraviolet source, emitting only a fraction of a percent of its energy as UV. [citation needed]

4. Ultraviolet catastrophe - Wikipedia

   en.wikipedia.org/wiki/Ultraviolet_catastrophe

   The Rayleigh-Jeans law is an approximation to the spectral radiance of electromagnetic radiation as a function of wavelength from a black body at a given temperature through classical arguments. For wavelength λ {\displaystyle \lambda } , it is:

5. Here’s Why UV Flashlight Black Lights Are Surprisingly ...

   www.aol.com/news/why-uv-flashlight-black-lights...

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6. Blacklight paint - Wikipedia

   en.wikipedia.org/wiki/Blacklight_paint

   Black light paint or black light fluorescent paint is luminous paint that glows under a black light. It is based on pigments that respond to light in the ultraviolet segment of the electromagnetic spectrum. The paint may or may not be colorful under ordinary light. Black light paint should not be confused with phosphorescent (glow-in-the-dark ...

7. Luminous paint - Wikipedia

   en.wikipedia.org/wiki/Luminous_paint

   Fluorescent body paint under a black light. Fluorescent paints 'glow' when exposed to short-wave ultraviolet (UV) radiation. These UV wavelengths are found in sunlight and many artificial lights, but the paint requires a special black light to view so these glowing-paint applications are called 'black-light effects'.