Halloween Blacklight - Black Light

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Black lights are a great addition to your Halloween haunt and displays. There are many things that you can use black lights to enhance your Halloween decorations and special effects. Painting your props with this invisible fluorescent paint will make them glow eerily under black lights enhancing there overall effect. See how we've used it in our Giant Spider Web articles. You can also use it on Halloween signs, Costumes, Masks, skeletons, bats and other decorations. Paint plaster or plastic skulls with fluorescent paint and display in your graveyard, on fence posts, etc.

You might ask, exactly what is black light? If you turn on a black light bulb in a dark room, what you can see from the bulb is a purplish glow. What you cannot see is the  ultraviolet light that the bulb is also producing. Our eyes can see the visible light in a spectrum ranging from red through orange, yellow, green, blue and violet. Above violet is ultraviolet light, which we cannot see.

What you see glowing under a black light, whether it is a fluorescent poster, something you've painted with fluorescent paint or a newly-washed white T-shirt, is different phosphors. A phosphor, is any substance that emits visible light in response to some sort of radiation. In other words, a phosphor converts the energy in the radiation into visible light. So a fluorescent paint contains a phosphor that converts UV radiation into a specific color of visible light.

Normal colors simply reflect light, but a fluorescent color absorbs the radiation and re-emits it in the visible spectrum, sort of like a light bulb emits light, so it looks much brighter than a normal color. Black light units and there accompanying bulbs come in a variety of sizes, anywhere from six inches to four feet in length. Most are AC powered, but you can also get some of the smaller ones in battery powered.

 

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