What is UV light?
Frequently Asked QuestionsAll 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.
Related QuestionsIs UV light harmful? How is UV light different from say a fluorescent light?
Frequently Asked QuestionsYou 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.
Related QuestionsHow does the UV light actually kill microorganisms?
Frequently Asked QuestionsUV 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.
Related QuestionsWhat's the connection between UV light and Vitamin D production?
Carefree Tan TroonSunlight 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.
Related QuestionsWater Source -- Hawaii's choice for quality water treatmentUltraviolet (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. The water treatment industry uses high-powered form of UV light called UV-C or "Germicidal UV" to disinfect water.Related Questions
Foire aux questionsAll 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.Related Questions
How often does the UV light bulb (lamp) need to be replaced?
Water Filters, Purifiers, and Purification FAQIt is essential that you change your UV lamp annually. The ability of the lamp to emit UV light decreases over time. Remember - UV light is invisible! Even though the lamp is still glowing after one year, there might not be enough UV light reaching your water to be effective.
Related QuestionsIs moderate exposure to the sun or ultraviolet (UV) light good for your health?
Bronze Age Tanning&Salon | Olympia, WA | Frequently Aske...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.
Related QuestionsWhy do the euro banknotes "light up" under ultraviolet light (UV light)?
Bundesbank - Currency - FAQ - Euro-banknotesFor information on the UV properties of the euro banknotes, see the guidelines on how to identify counterfeit euro banknotes.
Related QuestionsWill the UV light fade colours in the room ?
FAQ: Solarc Systems Inc.: Ultraviolet Phototherapy ProductsIt is a fact that prolonged exposure to ultraviolet light will fade colours. However, this requires considerable cumulative amounts of UV light. Because a home UVB unit is used relatively infrequently, (as compared to exterior paint exposed to daily sunlight), our practical experience is that colour fading is not an issue. If it occurs, it is barely perceptible. The only possible exception to this is that fine art should be protected.
Related QuestionsUV light treatments, and sunlight (Dead Sea) Why is natural sunlight such a good healer?
Psoriasis Help Organisation - Online ForumNatural sunlight is a good healer for many people with psoriasis, but there are some who do not respond and some who are made worse. Sunlight consists of several different types of light across a spectrum ranging from infra-red, through visible light, to ultraviolet (UV). It is the ultra-violet part that can help in treating psoriasis.
Related QuestionsWhat about Ultraviolet (UV) and Infra-red (IR) light?
TLI: SoLux News PageIn 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.
Related QuestionsWhat should people do to prevent burning after they've experienced moderate exposure to UV light?
Bronze Age Tanning&Salon | Olympia, WA | Frequently Aske...The best advice is to cover up and/or-at least once every four hours-apply a generous amount (about 1 ounce) of a broad-spectrum sunscreen that blocks both UVA and UVB rays.
Related QuestionsHow much maintenance is required on a UV light product?
Dust Free Bio-Fighter® - Frequently Asked QuestionsLamps should be cleaned by a professional every six (6) months to remove any dust accumulation on the bulbs that might lessen the effectiveness of the UV-C light. The Dust Free UV-C light bulbs have a service life of 9,000 hours, or approximately 375 days. Annual replacement of the bulb(s) is recommended. Bio-Fighter® UV-C units should be left on continuously as turning them on and off ages the bulbs and power supplies.
Related QuestionsWHAT DOES ULTRA VIOLET (UV-C) LIGHT DO?
FAQSUltra Violet "C" Light occurring between 100 and 280 nanometers is responsible for the formation of Ozone in the upper atmosphere and the destruction of airborne micro-organisms. Naturally occurring UV-C is almost completely absorbed in upper atmosphere; when UV-C photons collide with oxygen atoms, the energy exchange causes the formation of Ozone. In fact, UV-C is the "source" of the Ozone found in the Ozone Layer. UV-C light occurring at 253.
Related QuestionsIs UV light harmful to people?
FAQ about UV Ultraviolet Light Plasma Air PurificationProlonged, direct exposure to the light waves from a UVC bulb is harmful to all living organisms, including people. However, the air purifiers have been designed with safety in mind. Do not look directly at the UV bulb.
Related QuestionsWhat colours glow in UV light?
POI POI® - Support - Frequently Asked Questions (FAQ)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.
Related QuestionsWhich plastics are resistant to UV light?
Ensinger Ltd | Frequently Asked QuestionsCopolymer and homopolymer acetals are very similar in many characteristics. However, there are some differences, e.g. TECAFORM AD (POM-H) has higher mechanical values, better wear resistance and is better for use in tribological applications (friction and wear). TECAFORM AH (POM-C) has better chemical resistance.
Related QuestionsCan UV light damage plastics?
Ensinger Ltd | Frequently Asked QuestionsThe majority of plastics in their natural state are damaged by the different wavelengths of UV light (UV-A, -B, -C). The damage depends on the duration and intensity.
Related QuestionsIs the product stable in UV light?
Purista Business websiteYes. To test this, we treated a white cotton with Purista and exposed it to UV light equivalent to 2 years of Florida sun. No discolouration could be seen, and a minimal loss of Purista (which would not have affected performance) was measured.
Related QuestionsWhat is UV?
Water Filters, Purifiers, and Purification FAQUltraviolet (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.
Related QuestionsHow often will I need to replace my UV light?
Ultra-Pure Air Purifiers - Frequently Asked QuestionsUnder normal circumstances, your air purifier's UV light will generally last more than 5,000 hours. Assuming average usage of eight hours per day, your air purifier's UV light should last for more than a year and a half.
Related QuestionsWhat about UV light technology?
Air Purifier FAQThese use UV Light to kill germs and other bioaerosols (living organisms suspended in the air - e.g. pollen, mould, yeast, fungi). If the air velocity is slow enough, it can achieve high kill rates, even 99.9%. The effectiveness is inversely proportional to the air velocity. This usually translates to small volumes of air being cleaned compared to other technologies, so overall effectiveness is reduced.
Related QuestionsWhat is the importance of UV light products?
FREQUENTLY ASKED QUESTIONSOver 90% of people's time is spent indoors. Concentrations of microorganisms will increase indoors, with little or no ventilation. With a larger number of death cases being caused by various bacteria, controlling the development and spread of pathogens is of chief concern in indoor environments. According to indoor air quality experts, controlling airborne microorganisms is the next major challenge of the HVAC industry.
Related QuestionsWhy use a UV light product?
FREQUENTLY ASKED QUESTIONSThe two primary benefits to using UV light are disinfecting air and preventing growth of mold. The UV light radiates a surface to keep mold from growing in that area and disinfects the air stream as it passes through the HVAC system. In one pass over the UV bulb, a high disinfection rate is not normally accomplished in the air stream. With repeated circulation of air through the system, a major disinfection rate is accomplished, making use of UV light very positive.
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