UV disinfection is a safe and well-understood process that has been used for more that 100 years. Similar to a number of commercial water treatment plants in Europe and the United States, UV Tubes use ultraviolet (UV-C) light emitted from a germicidal bulb to inactivate waterborne bacteria, viruses and protozoa. The only difference with commercial systems is that UV Tubes are easy to use and can be constructed from locally available and low-cost materials.

Ultraviolet phototherapy is the use of specific wavelengths of the sun's natural spectrum for the treatment of skin disorders such as psoriasis, vitiligo and atopic dermatitis (eczema). Phototherapy devices use either the short wavelength Ultraviolet-B (UVB) rays or the longer rays of Ultraviolet-A (UVA). UVB light produces biological reactions within the skin that lead to clearing of the lesions. UVB light is also very efficient at producing vitamin D3 in our skin; essential to good health.

The Ultraviolet (UV) Index provides important information to help you plan your outdoor activities and avoid over-exposure to the damaging rays of the sun. Developed by the National Weather Service (NWS) and the Environmental Protection Agency (EPA), the UV Index is issued daily as a national service. It is a forecast, of the amount of ultraviolet rays expected to reach the Earth's surface when the sun is highest in the sky.

Ultraviolet light treatment uses ultraviolet light to disinfect water or reduce the amount of heterotrophic (non-harmful) bacteria. This method uses no chemicals, and produces no taste or odour. It takes only a few seconds of exposure to disinfect the water, is easy to install and relatively inexpensive. However, it is effective in ensuring only the microbiological safety of the water, and further treatment is needed to remove any parasites and other contaminants.

Not necessarily. The effect of clouds on UV radiation is as varied as the clouds themselves. Fully overcast skies lead to reductions in surface UV irradiance. On average, scattered or broken clouds also cause reductions, but short-term or localised UV levels can be larger than for cloud-free skies if direct sunlight is also present.

Absolutely. There is a growing body of well-conducted, validated scientific research demonstrating that the production of the activated form of vitamin D is one of the most effective ways the body controls abnormal cell growth. Moderate exposure to sunlight is the only way for the body to manufacture the vitamin D necessary for producing activated vitamin D.

CD ozonators use an exposed electrical arc to generate ozone. A byproduct of Corona Discharge ozonation is nitric acid. When mixed with moisture from the humidity in the grow space this corrosive “syrup” contaminates the surfaces that produce the ozone. This requires frequent cleaning of the arcing surfaces or the contamination will reduce the ozone output of the generator. UV lamps use concentrated ultraviolet light waves to produce ozone.

In addition to the superior color rendering abilities, SoLux has been engineered to have very low heat (IR) output and ultra-low UV output. That combined aspect of extremely high color rendering and extremely low UV and low IR is extraordinary. It means that with SoLux, you will have the brilliance of daylight without the negatives aspects of UV and IR. The result is a superior presentation that won't cook or bleach the subject being illuminated.

Solar energy reaches the earth over a range of wavelengths. Ultraviolet light or UV (300 to 380 nanometers) is short wavelength radiation. It is invisible radiation and counts for approximately 2 percent of the radiation reaching the earth.

UV systems are extremely economical to operate. A typical 8 USGPM whole house UV system operates on the same power requirements as a 40 WATT light bulb.

Light is divided in to many different categories based on its wavelength. Most of the light that reaches the earth's surface is visible light or infrared light, but a small percentage consists of ultraviolet light. This light is divided into ultraviolet A, B, and C. Ultraviolet light has many effects on the skin, the most common being a sunburn and the formation of pigment or a suntan.

For information on the UV properties of the euro banknotes, see the guidelines on how to identify counterfeit euro banknotes.

Ultraviolet light represents a portion of the sun's electromagnetic spectrum. It is the wavelength band immediately beyond the violet end of visible light. All bands of UV light are present throughout the environment - it comes from the sun, light fixtures, electrical devices, etc. The UV range of the spectrum is characterized by wavelengths between 100 and 400 nanometers (nm).

A. Emergency or short-term treatment of drinking water may be required when the water supply to your home is interrupted due to natural disasters, accidents, or other causes. Small quantities of water can be effectively disinfected through two general methods. One method is boiling, and it is the most positive method by which water can be made bacterially safe to drink. Another method is chemical treatment.

Yes, and more every day. Tokio Marine and Fire Insurance, Co., Lehman Brothers, and Charles Schwab have all publically described their ongoing rollout of DCE based applications. The Open Group's Web server has a section that includes some reports on 'real-world' experiences from companies using DCE in production. Intellisoft published a 48-page "advutorial" (that means advertisement and tutorial) with the help of many DCE vendors, totally devoted to the above.

Ultra Violet Light Detector: Ultraviolet light is used to detect the range of invisible radiation wavelengths shorter than violet in the invisible spectrum. Here is how it works: with advances in copier and laser printing technology, it has become easier than ever to create high-resolution replications of a wide range of currency. The UV detector works like X-Ray vision to zone in on questionable areas.

UV and non-UV are abbreviations for the kinds of coating used on our paper. Here are some of the core differences and applications: UV (Ultraviolet Coating) is a clear liquid spread over the paper like ink and then cured instantly with ultraviolet light. UV coating gives more protection and sheen than either varnish or aqueous coating. Since it is cured with light and not heat, no solvents enter the atmosphere.

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.

Disinfection is the destruction of pathogenic and other kinds of microorganisms by physical or chemical means. Disinfectants are chemical substances used to destroy viruses and microbes (germs), such as bacteri and fungi.