What type of energy does a hourglass use?

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Wiki User
August 17, 2008 6:59AM

An hourglass is a creation that simply uses the gravitational

pull of the earth to move sand or other types of particles in an

upper chamber down through a thin canal into a lower chamber.

Usually they are engineered to approximate a certain length of time

from when all the particles are in the top, to when all the

particles are in the bottom.

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