This unusual desktop timer suspends a sand-filled hourglass inside a liquid-filled glass cylinder. Flip it to watch the white sand fall while the hourglass itself floats upward.
Key Features
- Sand-filled hourglass suspended in a liquid-filled cylinder
- Chrome-finished metal construction
- Engaging educational and desktop display
- White sand with an approximate 1- to 2-minute flow
Specifications
- Approximately 1.5" diameter x 8" high
- Approximate flow time: 1–2 minutes
- White sand
J
Jeffrey W. The hour glass is very nice looking, but it is supposed to get torqued in the water filled tube until it becomes top buoyant from sand flowing from top to bottom then float to the top. This is the puzzling physics conundrum it creates (if you're unaware of the torque caused by the bottom buoyancy). The glass sent floats immediately upon being flipped. Little disappointed, but it is nice enough looking it will sit on my desk none the less.
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