A fascinating exhibit of both solar energy and light refraction, this see-through device sticks onto any window in direct sunlight to create a never-ending display of scientific beauty. Watch the tiny solar-powered motor spin as twin Swarovski crystals split sunlight into its component colors and send rainbows cascading across walls.
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This offer expires 12/02/13 at 11:59 p.m. PT and can be modified or canceled at any time. Offer excludes framed maps, Genographic Kits, CafePress merchandise, mounted maps, and globes. U.S. standard delivery only. Additional charges apply for expedited and non-U.S. shipping. Cannot be combined with other offers; not valid on previous orders. Applicable for online orders only. Prices not valid in the National Geographic UK Online Store.