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Summary

• Particles have wave character!
• Schrodinger’s Equation predicts the wave function Psi with complete certainty
  • Agrees with all experiments up to now
  • The meaning of (Psi)² is the probability that the particle will be found at a given place and time
• Heisenberg showed that quantum mechanics leads to uncertainty relations for pairs of variables
  Delta x Delta p > hbar/2;Delta E Delta t > hbar/2
• Quantum Theory says that we can only measure individual events that have a range of possibilities
  • We can not predict the result of a future measurement with certainty
  • More next time on how quantum theory forces us to reexamine our beliefs about the nature of the world