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Dr. Christensen
PHYS 1400 Classnotes Through the Term
Dr. Christensen
Fall 1999
The Solar System
How Big is the Solar System?
How Did the Solar System Form?
Where do the Planets (which are made of elements heavier than hydrogen and helium) Come From?
But if Gravity ONLY Contracts, Why is the Universe Expanding?
If Everything is Spread Out, Where is the Central Mass that Everything Orbits Around?
The Atom
How Small is an Atom?
How Do we See?
Is an Atom Hollow?
Introductory Atomic Physics
Mandeleev's Periodic Table
The Model that Survived
Electron Orbits
The Problem of Electron Orbits
The Solution
The Periodic Pattern
Why do Elements React with Specific Mass Ratios?
The Color of Atoms
How do electrons from one orbit get to another orbit?
The Nature of Light
Rydberg's Equation
Glossary
Radiation
Alpha
Radiation
Beta
Radiation
Gamma
Radiation
Half-Life
The Units of Radiation
Typical Doses
About this document ...
Joseph Christensen
2001-05-02
Radiation
Radiation
Radiation