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LIFE IN THE UNIVERSE
Astronomy 202

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Date of last modification:
16/12/2010

Class 02/09: (No slides were shown)
Topics covered:

• Rapid neutron capture in SNae
• Elements, elementary particles (nucleons, electrons, positrons, etc.), Atoms, Molecules
• The electromagnetic spectrum (from radio to γ rays)
• The energy of photons
• Absorption & Emission
• The radio

Links:

• Neutron Capture (the process of making elements heavier than iron)
• The r-process
• Nucleons
• The simple Bohr model of an atom (note: this is a toy model)
• Build your own atoms flash game
• The electromagnetic spectrum
• Energy of a photon
• The photoelectric effect (for which Einstein actually got the Nobel prize)
• The difference between absorption and emission
• Emission spectrum
• Absorption spectrum
• Radio wavelengths
• Radio Astronomy

Readiness Quiz questions:

1. List the names for the smallest piece of an element, a compound, and of light.
2. Which has more energy a UV photon or a microwave photon? Which has a higher frequency?
3. What atom is the center piece of many, if not most, of the chemical reactions we see in gas clouds in space?