This preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: “We choose to examine a phenomenon which is impossible, absolutely i m p o s s i b l e , to explain in any classical way, and which has in it the heart of quantum mechanics. In reality, it contains the o n l y mystery.”Richard P. Feynman Introduction to Quantum Mechanics • This week and the next are critical for the course • Week 3 – Lect. 5,6: Light as Particles  Particles as waves  WaveParticle Duality  Probability Uncertainty Principle  “Weirdness” of Quantum Mechanics • Week 4 – Lect. 7,8: Schrödinger Equation  Definite predictions of quantum behavior  Examples of particles in infinite wells, finite wells  Leads up to rest of course • Midterm Exam – Monday, Feb. 11  will cover Lectures 17 and qualitative aspects of lecture 8 • Week 4 – The discussion and the quiz will be on material in lecture 7 • Week 4 – Online homework covers material in lecture 7 – due on Thur. Feb. 14, but we strongly encourage you to look at the homework before the midterm! • Review – Sunday, Feb. 10  office hours Feb. 10 and 11 Introduction to Quantum Mechanics • This week and the next are critical for the course • Week 3 – Lect. 5,6: Light as Particles  Particles as waves  WaveParticle Duality  Probability Uncertainty Principle  “Weirdness” of Quantum Mechanics • Week 4 – Lect. 7,8: Schrödinger Equation  Definite predictions of quantum behavior  Examples of particles in infinite wells, finite wells  Leads up to rest of course • Midterm Exam – Monday, Feb. 11  will cover Lectures 17 and qualitative aspects of lecture 8 • Week 4 – The discussion and the quiz will be on material in lecture 56 • Week 4 – Online homework covers material in lecture 7 – due on Thur. Feb. 14, but we strongly encourage you to look at the homework before the midterm! • Review – Sunday, Feb. 10  office hours Feb. 10 and 11 Introduction to Quantum Mechanics: Light as Particles f (x10 14 Hz) V stop (v) 0.5 1 1.5 2 2.5 3 3.5 5 10 15 f S 1 S 2 + V Collector Metal Surface electrons A Overview Overview c Photoelectric Effect → light as particles c “Photons” – quanta of electromagnetic waves c Relation of energy and frequency of a photon c Photon momentum c Key relations of quantum mechanics: c E=hf or E = ћ ϖ ћ = h/2 π c p=h/ λ c Waveparticle Duality c Two slit experiment reveals the profoundly different nature of the quantum world from our everyday experiences c Weird Quantumness c The truth is stranger than fiction! Wave Wave particle Duality for particle Duality for Light and Matter Light and Matter c In Physics 212 and the first 4 Lectures of Physics 214, we considered “light” as a wave c Definitively established by experiments: c Electromagnetic waves exhibit interference – diffraction of visible light, xray diffraction from crystals, radio waves bend around corners, . . . ....
View
Full
Document
This note was uploaded on 09/12/2009 for the course PHYS 214 taught by Professor Debevec during the Spring '07 term at University of Illinois at Urbana–Champaign.
 Spring '07
 Debevec
 mechanics

Click to edit the document details