Demos by PIRA

1R10 Hooke's Law

  1R10.10Weight on a vertical spring with markers on stand.
  1R10.10Standard pan balance with assorted weights.

1R20 Tensile and Compressive Stress

  1R20.15Young's modulus of elasticity: Weight stretches wire.
  1R20.70Prince Rupert's Drops.

1R30 Shear Stress

  1R30.20Shear: Foam block.

1R40 Coefficient of Restitution

  1R40.10Elasticity: Balls bouncing on steel or glass cylinder.

1R50 Crystal Structure

  1R50.20Wave surfaces of crystals.
  1R50.30Assorted crystals to show.