Ultraviolet light is an electromagnetic light with a wavelength that is shorter than violet light but longer than the light used in x-rays.
Tanning beds are one such type of ultraviolet equipment and works by using several fluorescent bulbs to enhance an individual’s skin color.
Crime scene technicians use ultraviolet equipment to get forensic evidence from a crime scene. At the turn of the century, UV radiation in space and its characteristics has been better understood. UV radiation is further divided into UV-A (320-400 nm), UV-B (290-320), and UV-C (220-290 nm). Ultra Violet light is the invisible light that exists just beyond the shortest light rays (violet) in the visible light spectrum. The interesting paradox about the former term for ultraviolet light, "chemical rays" is that Ultraviolet C, light wave technology actually offers a chemical-free way in which to sanitize and safely de-germ a variety of industrial and household surfaces. Natural ultraviolet light is emitted by the sun in three bandwidths, as UVA, UBC and UVC light, but 98.7% of that light is absorbed by the earth's atmosphere and the remainder of the UV light that reaches the earth's surface consists of predominantly UVA radiation. With the growing interest in eliminating toxins and allergens from the home environment, the germicidal power of UVC light offers a welcome alternative to chemical cleaning products. Mattresses, carpets and bedding are perfect breeding grounds for dust mites and other allergy-causing microorganisms that can trigger asthma, hayfever, eczema and other illnesses. A word of caution about UVC light: protective eyewear is advised when using these products, as UV light sources should NOT be looked at directly, just as one is advised not to look at the sun during an eclipse. Scientists have finally unravelled why scorpions glow bright green under ultraviolet light.
The views expressed in the contents above are those of our users and do not necessarily reflect the views of MailOnline. These types of lights give off a certain amount of radiation and energy, are strong enough to kill germs, and give some substances a fluorescent glow.
The security officers use a specific lamp called a black light to find artificial substances. These lights are called ultraviolet monochromators and can detect bodily fluids such as semen, blood and saliva. The radiation from ultraviolet lights could be harmful to a person’s skin and overall health if exposed to it over a long period. It lies between the electromagnetic spectrum of x-ray, which is 40 nm and visible light, 400 nm.

UV rays have smaller wavelengths and therefore, have a greater amount of energy in contrast to the visible light.
UV-A and UV-B have longer wavelengths than UV-C which means they do not have as much energy as UV-C does. Some of you are just ordering professional made PCBs, that is not always worth of cost, other are using easier way – Laser printer toner transfer technique which is not very accurate, third option is more advanced – ultraviolet light exposure of photo-resist coated PCB through film mask.
In 1801, Johann Wilhelm Ritter, a German physicist, discovered that these invisible lights rays were very effective at darkening silver chloride soaked paper, and named them, "deoxidizing rays" to distinguish them from the heat rays at the other end of the spectrum. UVC light waves, which are the shortest and most powerful in the UV range, have germicidal properties, and are capable of breaking down the DNA of microorganisms such as viruses, bacteria, dust mites and other allergens and contaminants.
The Oreck Halo Vaccuum,Verilux UVC Sanitizing Wand and the Raycop Anti Bacterial Bed Vacuum are 3 products currently available to consumers that can safely eliminate invisible allergens and contaminants in areas that chemical cleaners would be completely unwelcome.
Several international studies have concluded that exposure to these allergens in the first two years of life can jump-start these life-long chronic conditions. The ability is widely known - but biologists have puzzled over why the creatures might have evolved it. Commonly called UV lights, they are often used in different kinds of ultraviolet equipment. These machines use ultraviolet rays with titanium dioxide to create an oxidative effect, which sterilizes the air and gets rid of harmful toxins. Officers use also another ultraviolet light technology called optical spectroscopy to illuminate images of fingerprints and illegal substances.
Most safety specialists recommended that people who use ultraviolet equipment wear safety goggles and protective gloves designed especially for ultraviolet rays. While there are many artificial sources of UV radiation, the sun is still the primary source of radiation in nature. However, recent development points out that UV rays may actually travel in small packets of photons. Because of the high energy that they contain, UV rays have the capability to cause molecules and even atoms to split, causing changes in the chemical component and even genetic make-up of living organisms. Because of this, UV-A and UV-B do not have enough energy to react with ozone which enables them to pass through the ozone layer with ease. These chemically reactive light rays were referred to throughout most of the 19th century as "chemical rays" and eventually dubbed "ultraviolet rays" while" heat rays" became known as infrared radiation. UVC light has been used for decades to sanitize surfaces and tools in medical labs and to sanitize water in water treatment plants.

UVC light destroys the DNA of allergans and microorganisms, such as lice, fleas, mold, bacteria and viruses, including influenza.
Please keep these products away from children and read all operating manuals thoroughly before use. Biologist Douglas Gaffin of the University of Oklahoma investigated the 'fluorescence' and found that the creatures can 'sense' light using their tails.The creatures may to have evolved the ability to help them scuttle away under rocks. However, because the lights use a small amount of radiation and mimic the sun’s rays, there is health risks associated with using tanning beds. These germicidal air purifiers are popular because they last a long time, require little maintenance and can run off one battery a year. Optical spectroscopy uses a special ultraviolet light and magnifying lens to reproduce the images of the fingerprints and residues.
Workers who work around large ultraviolet equipment can also get ultraviolet face shields to shield their face and skin from the ultraviolet light.
Many spring water bottlers now utilize UVC light to disinfect bottles and sterilize equipment and increasingly, public water treatment facilities are utilizing UVC technology to upgrade safety standards for drinking water. The benefits of germicidal UVC light are fairly obvious for households in which children and pets, as well as adults do not want to risk exposure to either harmful microbes or potentially toxic chemical disinfectants. The World Health Organization has issued a warning that tanning beds pose a severe carcinogenic threat to humans.
UV-C, on the other hand, because of its higher energy, breaks the bonds between molecules of the ozone and therefore, is prevented from entering into the earth. These products will clean, sanitize and eliminate odors from household surfaces without adding additional pollutants to the household environment. As embedded part of this project is a count down timer with LCD built on AT90S2313 AVR microcontroller which can be replaced with newer ATtiny2313.
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Comments Ultraviolet light nz ltd

  1. Delfin
    That you can see the heat coming longer exposure to the UV light and square.
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  4. Giz
    Doesn't mean it's not UV, it just means.