Monday, Sept. 23, 2013
Reminder: Test 1 this Friday; Review on Wednesday.
Today's Topics: Top Hat Q; Finish Chapter 5:
Spectroscopy (lecture notes)
Absolute temperature.
Kinds of spectra and information we get from light sources:
• Emission line spectra [composition].
• Continuous spectra [temperature, emitted by all objects].
• Absorption spectra [composition, temperature].
The Doppler effect [radial velocity].
And what kinds of radiation do we get from space here on Earth?
Study aid: Today's class summary.
Spaceweather; APOD; Heavens-Above; Clear Sky Clock; PhysOrg Astronomy News; The Sky at a Glance
