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Message: <blockquote data-quote="Jack7" data-source="post: 4715626" data-attributes="member: 54707">I thought of one more application under the general heading of Focused Redeployment - A set of lenses created out of the atmosphere, or even out of thin sheets of water and gas that would act like telescopic lenses, allowing one to see clearly and up close objects that are really miles and miles away. Since such lenses could be created at nearly any angle of reflection and refraction in the atmosphere, or even along a body of water, it would even be easy to see objects hidden from line of sight by some obstruction or set of obstructions. By "indirect" or reflected optical observation. Through this means you could even spy upon objects well beyond the horizon line if you knew the general position of your target and could create a "sighting lens" in the atmosphere above them.I got this idea from <a href="http://www.eso.org/sci/facilities/paranal/site/paranal.html" target="_blank">Paranal</a> but I believe it, like many of the other ideas, could be created in real life as well given the proper conditions and technology.<img src="http://www.phys.ncku.edu.tw/~astrolab/mirrors/apod/image/0611/paranalMoonset_gillet_f.jpg" alt="" class="fr-fic fr-dii fr-draggable " data-size="" style="" /></blockquote>