Physics 20083 - Current Questions
Covers material from the film on Wednesday, April 22.
Complete version of Study Guide #4 is here.
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- Explain why the density of matter in the Universe is related to how much Helium was present in the early Universe.
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- Explain why the abundance of Helium (and other light elements) is a measure of the density of the Universe, independent of other measures of the density (such as counting galaxies in and dividing by a representative volume).
- (179)
- Explain the horizon problem and how the theory of inflation resolves the problem.
- (180)
- Explain the flatness problem and how the theory of inflation resolves the problem.