Intro to Quantum Mechanics (phys 304)

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Presentation transcript:

Intro to Quantum Mechanics (phys 304) Instructor: Prof. Marcel Franz Textbook: “Introduction to QM” by D.J. Griffiths (second edition) Lectures: Tu & Th, 9:30-11:15 Course webpage: www.physics.ubc.ca/~franz/phy304.html

Particle-wave duality What is this? Young’s “double-slit” experiment Interference: Light consists of WAWES

If light consisted of particles…

Light interference Path difference: Intensity maxima: Intensity minima:

Now perform the same experiment with electrons Experiment by A. Tonomura of Hitachi Corp., June 1999

Electrons: particles or waves? http://www.hqrd.hitachi.co.jp/em/doubleslit.cfm

What can we conclude about the electron from Tonomura experiment? Electrons appear to have both particle-like and wave-like properties!