Free Energy? Machines turning and radiometers spinning but no free energy here. Some cool science and physics demonstration apparatuses.
Science Demonstration Apparatuses (Science Toys)
Stirling Engine,
Hand Boiler (Closed System Distillation Apparatus),
Magnetic Hourglass (Hand blown timer magnet hourglass),
Westminster Magnetic Sand Timer,
Volcanic Eruption Toy,
Globe Barometer Glass (Glass Barometer),
Dowling Magnet Tube (Magnet Line Display) *Modified*
Stirling Engine,
Radiometer (Crookes Radiometer),
Gravity Glass Timer (Water and Sand Timer),
Glass Barometer (Globe Barometer),
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