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Sunburn effect (as measured by the UV index) is the product of the sunlight power spectrum (radiation intensity) and the erythemal action spectrum (skin sensitivity) across the range of UV wavelengths. [9] [10] The UV index is a number linearly related to the intensity of sunburn-producing UV radiation at a given point on the Earth's surface.
Using satellite data, measurements from the European Space Agency produce similar maps expressed in units of the widely followed UV Index, for locations around the world. [27] Effects of UV-radiation at high latitudes, where snow stays on the ground into early summer and the sun then remains at a low position even at its zenith, have been ...
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The Electronic Classroom of Tomorrow (ECOT) was a community/charter school based in Columbus, Ohio, United States. It was sponsored by the Lucas County Educational Service Center of Lake Erie West (ESCLEW) in Toledo , in accordance with chapter 3314 of the Ohio Revised Code .
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Weather broadcasts also include the UV index for the forecast day, and for the following day during the UV index season. The index runs from 1 (low) to 11+ (extreme). The air quality health index forecast is broadcast at the end of the broadcast cycle for cities in the station's service area.
Extreme UV and X-rays are produced (left of wavelength range) but comprise very small amounts of the Sun's total output power (area under the curve). Although the solar corona is a source of extreme ultraviolet and X-ray radiation, these rays make up only a very small amount of the power output of the Sun (see spectrum at right).