PIRA: 7D10.00


 Lab Equipment  Directions
  1.  64 ping pong balls
  2. board with clothespin triggers
  3. large darkroom clock
  4. 4 C-clamp (to hold down boards)
  1.  With the clothespins locked, release at random 32 balls in a set length of time.
  2. Repeat, releasing 16 balls, then 8 balls, then 4 balls, then 2 balls, with each group being released over the same set length of time.