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Turbine powered by the heat of your hands

Turbine powered by the heat of your hands

How to rotate a pinwheel and a spiral without touching them.




thermodynamics, physical, experiment, wind, volume, heat, temperature, thermal interaction, friction, flow, gas, airship, work, kinetic energy, heat flow, Joule, paper snake spiral, air, physics

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Levende lys

Levende lys har været brugt til belysning siden oldtiden.

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