Eking out more power from solar cells is an ongoing challenge for scientists, and now architect André Broessel has developed a spherical glass energy generator that's said to improve efficiency by 35 percent. Acting as a lens, the rig's large water-filled orb concentrates diffused daylight or moonlight onto a solar cell with the help of optical tracking to harvest electricity. In certain configurations, the apparatus can be used for solar thermal energy generation and even water heating.
Engadget , Spherical glass lens concentrates sunlight by up to 10,000 times, boosts solar cell efficiency, Spherical glass lens concentrates sunlight by up to 10,000 times, boosts solar cell efficiency
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