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Chapters 7 and 8
Quantum Theory and Atomic Structure
Quantum Theory and Atomic Structure
Review Chapter 7 and 8
Chapter 7 Problems: 5, 31, 36, 37, 38, 45, 46, 47, 49, 53, 54, 59,
62, 63, 71, 75, 88
Chapter 8 Problem: 7, 8 , 9, 11, 13, 18, 21, 23, 39, 43, 46, 48, 53, 55, 59
Entering the Quantum World
Newtonian Mechanics seem to quantify
all observations (of particle dynamics)
Continuous variable – mass of apple
appears as a continuous function/density
Newton’s apple
BUT at Atomic Level would appear discrete
≡
QUANTUM EFFECT…Nature becomes
discrete…might expect classical (continuous
mechanics to break down and need to use
discrete variable integer (quantized) units
And yet there is more……
Key “Rotten Apple” Experiments
Challenging Newtonian View
1. Ultraviolet Catastrophe
•
Ideal blackbody radiator should emit red
→
orange
→
yellow
→
blue
→
uv
•
Classical heat/colour viewed as oscillations of
lattice/dipoles and should be continuous
function
•
Classically damping goes as
ν
2
; so bluer
colours observed only at higher energies for a
given material
•
⇒
NEVER OBSERVED!!