A Galileo thermometer A Lava lamp Two liquids Cartesian diver
Love thermometer A drinking duck Psychometer Goethe's Barometer
Magic sticks Twister in a bottle A glass of wine Soap bubbles
Planes Flying fan Hair-drier and ball Steamboat Puff Puff
Crookes' light mill Stirling engine Water turbine Easter monday dousing
Intelligent metal Elastic plasticine Warm coffee Sand pictures