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Explosive > Ultraviolet Radiation
The following information is about Ultraviolet Radiation.
Ultraviolet Radiation Defined
Ultraviolet radiation is invisible Electromagnetic Radiation with frequencies (about 1015 to 1018 Hz) between that of visible violet light and X rays; it ranges in wavelength from about 400 to 4 nanometers. Ultraviolet (UV) radiation can be detected by the Fluorescence it induces in certain substances and by its blackening of photographic film. Most of the UV component of sunlight is absorbed by the Ozone layer of the atmosphere. UV radiation can also be produced artificially in arc lamps. Vitamin D in humans is produced by the action of UV radiation on ergosterol, a substance present in the human skin.
Ultraviolet radiation is invisible Electromagnetic Radiation with frequencies (about 1015 to 1018 Hz) between that of visible violet light and X rays; it ranges in wavelength from about 400 to 4 nanometers. Ultraviolet (UV) radiation can be detected by the Fluorescence it induces in certain substances and by its blackening of photographic film. Most of the UV component of sunlight is absorbed by the Ozone layer of the atmosphere. UV radiation can also be produced artificially in arc lamps. Vitamin D in humans is produced by the action of UV radiation on ergosterol, a substance present in the human skin.
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Off-site Ultraviolet Radiation Links, User Submitted
The following links have been collected through user bookmark submission in the Ultraviolet Radiation category. Please note, because these resources are off-site we cannot guarantee the accuracy or quality of any information.
Thu Jul 2
Wed Apr 15
Fri Apr 3
- NASA: spotless sun cannot reverse climate change | Climate Realists: However as NASA points out, in this solar minimum science is able to observe more than sunspots. In the 55 years that solar radio emissions have been recorded they have never been so low. And while the sun?s visible brightness has only dropped by 0.02% compared to its value during the previous, and fairly deep, solar minimum in 1996, the solar output of extreme ultraviolet radiation is down by 6% on the same basis. The pressure of the solar wind--particle s streaming off the surface of the sun -- has fallen to very low levels, and some researchers argue this may allow deep space cosmic radiation to be felt more strongly in the atmosphere, perhaps causing ?nebulation? or a rise in the types of cloud cover or atmospheric opacity that could lead to surface cooling.
Fri Feb 20
Tue Jan 20
- Ultraviolet Radiation Safety Meter with NIST Certification - Mfg# 6D: Ultraviolet Radiation Safety Meter
Wed Dec 10
- Spray Tanning: http://go123.b iz/lifestyle/t anning/spray-t anning/ Thousands of people have chosen to replace natural sun tan with spray tanning, particularly since thus you can enjoy a great honey-like skin all year round.
Thu Nov 6
- AU Optronics' miraculous LCD Panels can read fingerprints or UV levels: "measure the intensity of UV rays, numerically displaying the results on a scale of 0 to 11. According to the company, the UV reader "is targeted at female users who are concerned about the amount of UV light outdoors." ; Idea: UV/Vitamin D monitoring Ring that changes colour customised to skin tone. Including RF transmitter and service for datalogging.
Tue Sep 9
Fri Sep 28
- These are Tough Microbes, But They Don't Come from Mars: You know the cliche, wherever we find water here on Earth, we find life. But what if the environment is really hostile? So hostile that any living creature would almost never see water. And even when there was water, they were constantly being blasted wit
Sun Apr 1
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Off-site Ultraviolet Radiation Research Links
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