igoriginal Posted May 11, 2016 Share Posted May 11, 2016 Since the 1950's, onward (as radar equipment use became increasingly more commonplace within many fields of research and analysis outside of military applications), these high-altitude radar echoes which appear at dawn and disappear at sunset, day after day, have largely remained a mystery - until now - as recent data and experimental models suggest that these echoes are the result of extremely energetic ultraviolet radiation (UV-C) from the sun striking thinly-dispersed gas molecules in a relatively narrow layer of the upper-most atmosphere, eliciting a photon-electron interaction (photoelectron-induced waves). It is this interaction which is now suspected of being the likely source of these 150 km-altitude phantom radar echo anomalies. Imagine that! A UV connection! For the entire article, follow the link below. Mysterious radar echoes in the sky explained? Link to comment
Andrea B. Posted May 17, 2016 Share Posted May 17, 2016 It is probably no surprise that those very short UV-C wavelengths can be rather frisky!! Now we have an interesting example. I loved the phrase "radiation fried atmosphere". Thanks for the linkie. Link to comment
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