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Persistence of Vision Ball

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Product Info

We love this demonstartion...hold the ball in your hand, and it will glow with a white light. Now spin it around in a circle (using the included thether) and suddenly you see blinking red, blue, and green lights. Stop it spinning and the light is white again. (Of course, it's especially cool in the dark.) The secret is multi-colored LED lights that combine when stationary to create white light, but can be detected separately when in motion. A great demonstration of how white light can be produced by mixing colored light, and the persistence of vision. Poi spinners love to use these to practice. (6.4 cm, 2.5 in.) Uses 3 L1154 batteries, included.



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