Recording Temperature!

We measure temperature in classrooms, houses and large buildings.

Exanding liquids in a glass tube is how students are exposed to temperature measurement.   Now we use electrical behaviour in a resisted circuit.  This thermometer has an individual address codes.  The code in the Arduino or Raspberry Pi can retrieve the temperature from a particular thermometer in a wired network of many thermometers.  Oh .. and you can drop them.  They don't break!