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Colored Sand Motion
Comprised of two hourglasses with different colored sands, the sand in one hourglass will float while the sand in the other sinks!
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Colors in Motion
Flip the demo over, and the colors will start to switch places, without mixing! Magic, or density?
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Sandscape
When inverted, three different colored sands flow through a clear liquid, starting and stopping as they encounter a hole or a barrier.
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