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Module 5: Advanced Mechanics5.1 Projectile Motion
5.2 Circular Motion
5.3 Motion in Gravitational Fields2 Topics
Module 6: Electromagnetism6.1 Charged Particles, Conductors and Electric and Magnetic Fields
6.2 The Motor Effect1 Topic
6.3 Electromagnetic Induction
6.4 Applications of the Motor Effect1 Topic
Module 7: The Nature of Light7.1 Electromagnetic Spectrum3 Topics
7.2 Light: Wave Model
7.3 Light: Quantum Model2 Topics
7.4 Light and Special Relativity
Module 8: From the Universe to the Atom8.1 Origins of the Elements5 Topics
8.2 Structure of the Atom3 Topics
8.3 Quantum Mechanical Nature of the Atom2 Topics
8.4 Properties of the Nucleus2 Topics
8.5 Deep Inside the Atom4 Topics
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Lesson 12, Topic 3
The Big Bang Theory
The Big Bang was a massive release of energy which marked the beginning of our universe.
- The universe began extremely hot; it is now cooling.
- It was initially compressed to a singularity, a one-dimensional point with zero volume; it is now expanding.
- Pure energy transformed into simple, fundamental particles before finally producing complex particles as temperatures decreased.
- Gravity brought particles together to produce the matter we know today.
Formation of Matter, Stars, Galaxies
- First particles:
- Fundamental Particles – leptons, neutrinos, quarks
- Zero Mass Particles – gluons, photons, etc.
- Matter + Antimatter –> Annihilation + Energy Release
- Small matter excess = our universe today (1B + vs 1B + 1 ish)
- Annihilation –> Lumpiness / random empty space
- Matter clouds drawn together (by gravity)
- Spin, thx centripetal force
- Flattening of clouds
- Eventual star formation