Newton's Gravity Glass - 3 Minutes

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Uploaded by on Jul 30, 2010

Newton's Gravity Glass - 3 Minute
http://www.officeplayground.com/Newtons-Gravity-Glass-3-Minute-Purple-P707.aspx

Fascinating and elegant, this beautiful hand-blown glass sand timer features double action powered by gravity. When you flip the Newton's Gravity Glass over, the hourglass within the liquid-filled glass cylinder moves upward as the sand within it falls. The sand takes approximately 3 minutes to flow to the bottom of the hourglass. This is an awesome desk accessory that will entertain you and your co-workers as you try to figure out how it does that double gravity thing!

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  • What about the air gap?

  • not very hard to figure out that something lighter then water will float and sand is affected by gravity...

  • screw gravity!

  • soo. how?? & first!

  • nice really nice

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