Demos by PIRA

4B10 Heat Capacity and Specific Heat


  4B10.10Computer demo: Nesting can calorimeter, runs 3 min.
  4B10.70Ruchardt's tube: Ball oscillates in a vertical glass tube on jug.

4B20 Convection


  4B20.10Heat water in "O" shaped tube adding a dye.
  4B20.25Cardboard strip drawn from glass tube extinguishes candle.

4B30 Conduction


  4B30.20Set of metal rods: Heat-sensitive paint changes color.
  4B30.40Copper/wood cylinder wrapped with paper over bunsen burner.

4B40 Radiation


  4B40.10Light the Match.
  4B40.11Concave mirrors focus candle flame on thermopile across bench.
  4B40.11Concave mirrors and horn thermopile senses candle across room.
  4B40.14Archimedes' principle: Aluminum and brass cylinders.
  4B40.40Computer demo: Kirchhoff's radiation law, runs 15 min.

4B50 Heat Transfer Applications


  4B50.20Boiling water in paper cup; cup does not burn.
  4B50.70Copper gauze over flame; gas burns only above gauze.

4B60 Mechanical Equivalent of Heat


  4B60.70Steam gun: Friction heated water in tube shoots a cork.

4B70 Adiabatic Processes


  4B70.10Fire syringe: paper is ignited in a cylinder with a piston.
  4B70.20Cooling by expansion: Jar with water compressed with air.
  4B70.31Piston and cylinder compress/expand air measuring temp. and pressure.