Exactly. And there are much cheaper and more elegant ways to concentrate light than a massive glass/water-blob: https://en.wikipedia.org/wiki/Fresnel_lens htt

Exactly. And there are much cheaper and more elegant ways to concentrate light than a massive glass/water-blob: https://en.wikipedia.org/wiki/Fresnel_lens https://en.wikipedia.org/wiki/Fresnel_lens Just mount a freakin fresnel lens on the tracking device and you have a system with fractional weight ... https://www.youtube.com/watch?v=drE54ctrHBY https://www.youtube.com/watch?v=drE54ctrHBY (My guess is that this is originally an art project or maybe a Joke that was misinterpreted by some not-so-technical media) Get your fresnel lenses e.g. here: http://www.ebay.com/sch/i.html?_nkw=fresnel+lens http://www.ebay.com/sch/i.html?_nkw=fresnel+lens