Ultraviolet (UV) rays are located just past the violet portion of the visible light spectrum; sunlight is the main source. UV light is broken into three different types: UVA, UVB and UVC. UVA has longer wavelengths and passes through glass easily; experts disagree about whether or not UVA damages the eyes. UVB rays are the most dangerous, making sunglasses and sunscreen a must; they don't go through glass. UVC rays do not reach the Earth because its atmosphere blocks them.

Most people think that they're only at risk when they're outside on a sunny day, but UV light can go right through clouds, so it doesn't matter if the sky is overcast. The sun's rays are strongest between 10 am and 2 pm. Glare and reflections can give you trouble, so have your sunglasses ready if you'll be around snow, water or sand, or if you'll be driving (windshields are a big glare source).

Yes. People with cataracts (or who've had cataract surgery), macular degeneration, and retinal dystrophies should be extra careful. Read more about these conditions in our Eye Problems and Diseases section.

Yes, the fabric provides a complete block from UV rays. Our optional items, our Solar Shield and "Weather Wrap?", will provide the same protection for the screen runs.

Transitions lenses block 100% of harmful UVA and UVB rays, providing UV400 protection. In fact, Transitions lenses meet all internationally recognized standards for UV blockage including ANSI Z80.3, ISO 8980-3, EN 1836 and AS/NZS 1067. In addition, Transitions lenses were the first to receive the American Optometric Association's Seal of Acceptance for UV Absorbers and Blockers and the World Council of Optometry Global Seal of Acceptance for UV Absorbers/Blockers.

Tiffen lists a wide variety of filters in the 86C size, but not a UV Protector. The closest filter available would be the Sky 1-A, a popular general use filter that will also protect your lens while absorbing about half the UV radiation, a bit more than the UV Protector. The Sky 1-A has as slight pinkish tint that adds a touch of warmth that's especially helpful when shooting in open shade or on overcast days.

far as we know - no. Only InfinityGLARE Plus can filter out the harmful ultra violet rays. All of the other waxes, polishes or sealants cannot shield your car from the harmful ultra violet rays. Waxes and polishes can even oxidize and break down under constant exposure to sun.

Ultraviolet (UV) light is at the invisible, violet end of the light spectrum. Even though we can't see UV light, we are exposed to UV rays from all light sources, including the sun.

Several safety measures protect service technicians and homeowners from eye or skin UV exposure, including a lamp shutoff switch, and a sight glass for safe and easy lamp inspection. A protective cover with a safety interlock switch immediately deactivates the lamp before the service technician or homeowner can access or service the unit. The effectiveness of germicidal UV-C is limited once molds, which are more resistant to UV energy than airborne bacteria, have already formed on surfaces.

The UV rays emitted by indoor tanning lamps do not emit sufficient energy to penetrate past the skin layers. Thus, despite claims and rumors to the contrary, internal organs are not directly impacted by longer wave UV light.

The UV rays emitted by indoor tanning lamps do not emit sufficient energy to penetrate past the skin layers. Thus, despite claims and rumors to the contrary, internal organs are not directly impacted by longer wave UV light.

Special glass or vaporized glass has a blocking filter in the UV range, which reduces or blocks the penetration of UV rays.

Either by direct destruction or the alteration of the organism's DNA or RNA. Either way ensures a halt to the pathogen's* ability to reproduce and infect.

Caviseal will burn over and change color as well as lose a 1/16 of an inch in the first month. After it burns over the degradation action slows and you will lose about an 1/8" in four months. However we want it to burn over some because it creates a hardened shell on the face increasing its permeability and moisture penetration characteristics. Back to Top

Global Film is UV stabilized polyester, which can cut up to 99% of the harmful UV rays that contribute to fading. But it should be noted that UV rays is only one of the components in the solar energy spectrum, and the other components such as heat, infrared radiation and light are also responsible for fading due to sunlight. Your choice of Film should depend on your location and how these factors impact your application requirements.

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.

UV dose is the energy that is coming off the UV lamp over a specific time period. Therefore, UV dose (or fluence) is a product of UV intensity and time. Dose is usually measured in milli joules per square centimeter. Each Sterilight system is rated to disinfect your water at specific flowrate, under specific water quality conditions to give a UV dose of 30 mJ/cm2 at the end of the lamp life (which is one year). If you were to run say 10 USGPM through a 5 USGPM Sterilight system (ie.