Demos by PIRA

4A10 Thermometry

  4A10.10Measurement of temperature: Various types of thermometers.
  4A10.50Liquid Crystals: sheet changes colors with body temperature.

4A20 Liquid Expansion

4A30 Solid Expansion

  4A30.10Bimetallic strip: Brass/invar strip curves when heated.
  4A30.11Bimetallic switch: Change in temperature lights cold/hot lamps.
  4A30.21Ring and ball: Ball fits through ring only after ring is heated.
  4A30.30Heated steel rod expands, raises pointer,breaks pin on cooling.
  4A30.60Heated horizontal nichrome wire stretches, weight sags.
  4A30.61Heated iron wire stretches, rotates pointer.

4A40 Properties of Materials at Low Temperature

  4A40.90Molecular models, ball and stick.

4A50 Liquid Helium