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Hang this Focaults pendulum anywhere, but make allowance for much meditation time as this stunning scientific fascination converts kinetic energy into potential energy. It's intriquing to watch, relaxing & quite therapeutic! Create amazing patterns in the sand as the swinging pendulum gently writes complicated geometric messages in the sand. The patterns get bigger then smaller & bigger again as the arc of the pendulum changes. It will swing for over 5 minutes (depending how deeply you set it) Instructions are included (but hardly necessary) The sand comes zip locked in a plastic bag & it all packs into a box just a bit bigger than the sand tray which is 40 cm across.

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