The Wobbles
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This is the inside of solar powered wobble. They are just for decoration but the use the power of solar energy to move back and forth. The wobble taken apart shows the solar panel the thin dark strip in front of the white base. It is connected to wires, which are connected to a small computer chip and a converter. The converter magnetizes the coiled up wire and pulls the off-set metal part on the wobble towards it. This allows it to rock back and forth.
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This is a perfect example on how light energy travels all the way from the sun and still is strong enough to power things on earth. This is because the law of conservation of energy; energy cannot be created or destroyed just changed from one form to another.