Lect07-Phys172s11-(3.10,4.1-7,10,5.1-5.2-Uncertainty,Model_of_solid,dp_dt)

# Lect07-Phys172s11-(3.10,4.1-7,10,5.1-5.2-Uncertainty,Model_of_solid,dp_dt)

This preview shows pages 1–3. Sign up to view the full content.

Spring 2011 PHYS 172: Modern Mechanics Lecture 7 – Uncertainty, Model of solid ,dp/dt Read 3.10, 4.1-4.7, 4.10, 5.1-5.2 EXAM 1 is next week Time: 8:00-10:00 pm Wed Feb 9 Place: Elliott Hall Material: lectures 1-8, HW 1-8 (chapters 1-5 in the book, except 4.11-4.14) Problems: multiple choice, 14 questions (70 points) write-up part, hand graded (30 points) Equation sheet: provided with exam Practice exam + equation sheet: will be posted at the end of this week Note: no lecture on Feb 10 ! Probability and uncertainty Example: a free neutron decays with ~15 minutes: n p e ν + - + + t Probability Can we predict the motion of an electron near a free neutron? A)Yes B) No

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Semitransparent mirror photon Where is the electron? Classical Quantum Clicker poll: The photon will: A) Reflect B) Pass through The Heisenberg uncertainty principle Position and momentum of a particle cannot be both measured simultaneously 1927 Nobel Price: 1932 x x p h Δ Δ Werner Karl Heisenberg 1901-1976 Planck’s constant h = 6.6 10 -34 kg . m
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 9

Lect07-Phys172s11-(3.10,4.1-7,10,5.1-5.2-Uncertainty,Model_of_solid,dp_dt)

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online