Excerpt from the TV documentary series "The Universe".
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Invisible Exposure: The Science of Ultraviolet Rays (Headline Science)
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Soft X-Rays and Extreme Ultraviolet Radiation: Principles and Applications
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Which has more energy, a photon of ultraviolet radiation or a photon of yellow light?
Which has more vigour, a photon of ultraviolet radiation or a photon of yellow light?
Critique we say ULTRA violet (above visible) and INFRA red (below clear). This applies to energy and frequency. Higher frequencies are more untiring.
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Glittering Star Cluster and Interstellar Gas Cloud Post Card
Like a 4th of July fireworks display, a young, glittering collection of stars looks like an aerial burst. The cluster is surrounded by clouds of...
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Emission nebula NGC 6357. Poster
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LifeGoesStrong"Well-ordered evidence supports the benefits of sunscreen usage to underrate short- and long-term damage to the skin from UV radiation and outweighs any unproven claims of toxicity or charitable health hazard," said Daniel M. Siegel, MD, FAAD, president of the FDA Gives Sunscreen Makers An Reach With Label RulesSTUDY: Best Sunscreens for 2012Choosing first sunscreens, avoiding worstall 184 news articles »
Globule and MailFarmers: Protect Your Skin on 'Don't Fry Day' and Every DaySkin cancer is on the shake up in the United States due to overexposure to ultraviolet rays of the sun. The American Cancer Civilization estimates that one American dies every hour from skin cancer. This year alone, ACS estimates there will be more than 76250 Outer layer Cancer Foundation Offers Prevention TipsWeather Prophecy: High Ultraviolet Exposure Expected TodayTanning Trumps Peel Cancer Fears for Young Adults - -all 87 talk articles »
