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Sunlight has long since been known to kill micro-organisms. The rays from the sun contain the UV Spectrum used in Ultraviolet Water Treatment Systems - although at much lower intensities. Ultraviolet (UV) is a safe, clean, easy-to-maintain method of assuring that water is free of bacteria. UV Water Purification uses Ultraviolet light, just like sunlight, to kill micro-organisms that may be in the water.
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The disadvantage are that it can cause skin cancer if you are exposed to sufficient amounts of UV light (in particular, UV-B and UV-C light). See the Related Questions link to… the left of this answer for more information about that: "How do UV-B rays affect people?" One of the beneficial uses of UV light are that it can be used to kill bacteria and other microbes. It is commonly used to purify water for instance or clean things. UV light can also be used for a variety of other of application, such as black lights (which just look cool!). Also many compounds fluoresce (they emit light) when exposed to UV light. This is how forensic scientists can find traces of blood and other bodily fluids at crime scenes for instance. Finally exposure to some UV-B light causes the body to make Vitamin D, an important nutrient. While some exposure is important too much will cause sunburns and possibly cancer.
How UV Clear Pool Sanitizers Work Let's begin with your pool equipment. In order for your pool water to be cleaned it must be circulated. The pool pump is …the source for circulating the pool water. The pump draws water from the pool and is directed to the filter. The filter does exactly what it is named for. It traps particles and debris. After the water is filtered it is directed to your UV Pool Sanitizer. The filtered water enters the inlet of the UV System. Water flows through the length of the UV chamber. It is inside the chamber that microorganisms absorb powerful UV light. It is this light energy that destroys or inactivates these 'bugs'. A majority of residential pool owners use some form of chlorine to sanitize the water. They normally maintain anywhere from 1 part per million to 3 part per million (ppm) in chlorine. With the addition of UV Systems you can now save up to 70% in the cost of chlorine. Wouldn't it be encouraging to know that you can rely on your UV System when the sanitizer level falls below the norm? Once the water leaves the UV chamber it is returned to your pool. Many pools have a chlorine feeder which can be metered so you can control the level of chlorine. The amount of chlorine in the pool water is called sanitizer residual. We have field studies and reports from customers that are maintaining their chlorine residual at 0.3 part per million (ppm), 0.5 ppm and 1.0 ppm. It's possible that your drinking water could have a chlorine reading higher than .3 ppm. Pool owners that have sensitivity issues toward chlorine can now enjoy the benefits of UV System by maintaining a lower than normal chlorine residual. If given a choice wouldn't you rather swim in less chemicals anyway? Swim in a clean fresh smelling swimming pool with UV .
Approximately 10 to the power of minus 7 Metre, which is 1/10,000,000th of a Metre
That makes you have a sun burn
U.V can be separated according to its energy level and wavelength with UVa having the lowest energy and longest wavelength followed by UVb and ultimately UVc which has the sho…rtest wavelength and highest energy level. You may be familiar with UVa and UVb as the part of the suns rays which cause tanning, aging, and skin cancer. The Sun also emits UVc the most powerful and dangerous type of U.V., fortunately for us most of this is stopped in the upper atmosphere by gasses like ozone.
ultraviolet helps give so types of flowers with light
I believe that the field mouse or vole, or whatever the kestrel hunts marks concentric rings around its territory with urine. The mouse/voles urine comes up quite bright on th…e UV spectrum, so the kestrel often hovers where it can see these bright rings and keeps an eye out for the mouses/voles activity within the ring.
You get out in the sun. Sun light includes UV radiation. Additional answer Your questions asks how do you get UV radiation. You can get it from the Sun or from special UV em…itters made for the purpose. Exciplex lasers also emit ultraviolet radiation.
Rays of the sun
What is ultraviolet radiation where does it come from what is uv index and how is the uv index determine?
UV radiation is released from the sun.It is harmful for life.
UV light is invisible to the human eye, which is why it is sometimes referred to as 'black light'. However, some materials (e.g. DayGlo) can absorb UV energy and convert it in…to visible light energy. They are said to be fluorescent.
IR waves are longer than UV waves.