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Moving propeller and flaps
10% direct sales profit from New Zealand
In the reading corner of the bookstore
Description
the rotating base of the arched tower is a part of the screw conveyor mechanism that is a chief part of the model’s mechanism
Galileo Thermometer theater Moving propeller and flapsA Galileo thermometer (or Galilean thermometer) is a thermometer made of a sealed glass cylinder containing a clear liquid and several glass vessels of varying density. The individual floats rise or fall in proportion to their respective density and the density of the surrounding liquid as the temperature changes. It is named after Galileo Galilei because he discovered the principle on which this thermometer is basedthat the density of a liquid
