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Does the sand all pile up in the same way?
Where: Fisher Bay Observatory Gallery 6, Mezzanine
Believe it or not, when objects roll downhill, it’s not their weight or size that determines their speed—it’s how their weight is distributed.
Where: Crossroads: Getting Started
Pier 15 (Embarcadero at Green Street)San Francisco, CA 94111(415) 528-4444
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