The following colours are UV active (ie. will glow under UV light):- White,Pink,Yellow and Orange. This applies to all product; Beginner, Ultimate performance and the Beaming Poi.

I have never seen a cockroach glow under black light however other pests in more tropical or desert regions, the scorpions, do glow fluorescently. Scorpions are well known for this behavior. Their generally soft cuticle has fluorescent compounds. There is a famous picture on the cover of Science of a fluorescent scorpion. I once took a walk in the evening desert outside Albuquerque NM with a portable black light.

UV (ultra violet) is a portion of the electromagnetic spectrum. UV can not be seen by the human eye, but when it falls on certain materials it may cause them to become fluorescent (ie. glow) and reflect visible light back to our eyes. The following colours are sensitive to UV Light: White, Pink, Yellow and Orange will glow under UV Lighting. Red, Purple, Green, Blue and Black will not glow under UV light.

All light is given off at different wavelengths. For example if you see a rainbow, you will notice that the colors are always in a specific order from red all the way to blue. You are able to see each color due to their individual wavelength. These wavelengths are part of the visible portion of the electromagnetic spectrum. UV light is at a wavelength of 254nm (nanometers), and is not visible to the naked eye.

You never want to expose your skin or eyes to the light from a UV system. UV light is non-visible however it can be harmful, similar to the harmful effects of UV light from the sun. UV lamps can actually cause a severe sunburn-like effect if skin is exposed for long periods of time. Always ensure that you are wearing some type of protective glasses (ie. Safety glasses or sunglasses) when working on a UV system and the lamp is exposed.

Thanks for checking in on me. I've had a lot going on lately, huh!? I really appreciate the prayers. Seems as though I really need them now. I went to see Dr. Hahn Monday for chemo. He decided to suspend chemo until after the radiation is complete. Particularly the radiation to the c-spine. He said the chemo increases the size of the vessels. It is too risky to have the increased vessels in the spinal cord along with the cancer mass. Don't need anything causing a blockage.

Window ventilation and convection hoods are passive-the warm fumes rise, and hopefully, are diluted or escape. This requires very large volumes of fresh air, which is costly in the winter. Collection hoods with electric fans do a better job of removing fumes, but fumes still enter the room air before they are collected. There is usually still a significant odor. External hoods do not help internal kiln performance.

In simple terms, glow-in-the-dark crystals absorb invisible Ultra-Violet (UV) light from day-light and artificial electric-lights etc and re-emit that energy as visible light over a extended period of time. Unlike conventional colorants, LUMINESCENT pigments are not primary light reflectors, but actual sources of light.

Yes! Most people believe that the darkness of the lens is what protects their eyes. The degree of darkness has no effect on UV rays. For adequate protection, you need to buy sunglasses that indicate they block 100% of the sun's UV rays.

On the final page where you get your ticker code to cut and paste, you will find an option for light and dark backgrounds.

UV does not kill microorganisms like chlorine does, but instead UV inactivates them. UV light at a specific wavelength of 254 nm is readily absorbed by the genetic material of microorganisms. The DNA strand is coded with a specific sequence of something called base pairs. The sequence of these base pairs codes for certain characteristics. UV light at 254 nm is readily absorbed at the point on the microorganism's DNA strand which codes for reproduction.

Sunlight exposure (exposure to UV light) is your body's main source for Vitamin D - an essential vitamin for bone formation and repair, absorption of calcium and phosphorus and general good health. In many climates, the small amount of sunlight available from November to March makes it impossible to process Vitamin D naturally through outdoor sun exposure.

Fluorescent ink is not the same as glow-in-the-dark ink. Fluorescent inks glow under ultraviolet light. Phosphorescents glow after being exposed to light, and glow-in-the-dark things that glow without any outside stimulus are almost unknown. For a brief time around 1991, some tattoo artists experimented with fluorescent inks that glow under UV light. At the time, it was thought that these could be used to make tattoos that would only be visible under UV light.

Use the GLOW CADDIE for carrying your chairs to and from a Fireworks display, a high school football game, or an outdoor concert.

No we do not use blacklight or glow in the dark ink for tattoos because they are not FDA approved, and there are too few scientific studies concerning their long term safety.

Always start with a light or medium formula when you try a new brand. Light/medium/dark varies considerably from product to product. In general, the department store brand dark is heavier than the drugstore brand dark. And don't forget that two applications of a light or medium formula may give you better results than one application of dark.

Yes, but you will miss out on the advantages of very fast, complete cure using DYMAX technology. "Black lights" will cure DYMAX adhesives but at a slower rate than DYMAX lamps. Typical cure times may extend from 5 to 60 seconds. "Black lights" are not suitable for applications where the resin being cured is exposed to air. Call for specific applications.

Check your printer settings. To achieve best results, change your printer settings to "Color" and "Normal Quality".