Light, Atoms, and Telescopes

• Light as an electromagnetic wave (12:10): mp4, mp3
• The electromagnetic spectrum (9:58): mp4, mp3
• Which wavelengths of electromagnetic radiation penetrate Earth's atmosphere (2:54): mp4, mp3
• Refraction of light (8:15): mp4, mp3
• Reflection of light (4:35): mp4, mp3
• Refracting and reflecting optical telescopes (4:21): mp4, mp3
• Light-collecting power of an optical telescope (2:39): mp4, mp3
• Resolving power of a telescope (8:30): mp4, mp3
• Magnification of a telescope (6:21): mp4, mp3
• Problems with refracting telescopes (2:30): mp4, mp3
• Three basic designs for reflecting telescopes (5:33): mp4, mp3
• Atmospheric blurring in ground-based optical telescopes (6:13): mp4, mp3
• Atomic structure (12:28): mp4, mp3
• The emission and absorption of light by a single atom (11:42): mp4, mp3
• Emission and absorption spectra (10:25): mp4, mp3
• The Doppler effect (14:54): mp4, mp3

• Light and telescopes
• Atomic spectra; measuring properties of stars

• Comparison of continuous, emission, and absorption spectra for various types of stars: University of Nebraska-Lincoln
• Blackbody curves: University of Nebraska-Lincoln
• Hydrogen atom energy levels: University of Nebraska-Lincoln
• Telescope (refractor) simulator: University of Nebraska-Lincoln

• Light University of Nebraska
• particle and wave natures of light: New Zealand Science Learning Hub; M.W. Davidson (Florida State University); this Wikipedia page is probably a little more advanced than needed, but it is worthwhile reading for those who wish to dig deeper: wave-particle duality
• light and colour: New Zealand Science Learning Hub; D.E. Soper (University of Oregon); Yost and Daunt (University of Tennessee)
• light as an electromagnetic wave: NASA
• the electromagnetic spectrum: The Physics Classroom
• which wavelengths of electromagnetic radiation penetrate the Earth's atmosphere:

• Telescopes
• overview: astro-tom.com
• refraction of light: New Zealand Science Learning Hub
• reflection of light: New Zealand Science Learning Hub
• refracting and reflecting telescopes: Nick Strobel (Bakersfield College) refractors and reflectors
• light-collecting power of a telescope: Nick Strobel (Bakersfield College)
• resolving power of a telescope: Nick Strobel (Bakersfield College)
• magnification of a telescope: Nick Strobel (Bakersfield College)
• problems with refracting telescopes:
• three basic designs for reflecting telescopes:
• atmospheric blurring in ground-based optical observatories: Nick Strobel (Bakersfield College)
• history of telescopes H.J. Gerritsen (Brown University) and M. Umbricht (Ladd Observatory)
• radio telescopes NRAO
• current terrestrial observatories Wikipedia
• current airborne and space observatories Wikipedia, Wikipedia

• Atoms:
• the nature of heat: a little history, ; the modern concept of heat New Zealand Science Learning Hub; the Kelvin temperature scale University of Oregon
• the chemical elements
• energy levels of electrons in atoms SDSS, University of Nebraska
• emission and absorption of light by individual atoms University of Nebraska
• emission of light from glowing objects; how the amount and frequency of emitted radiation depends on the temperature of the glowing object Cornell University

• Atomic Spectra
• continuous spectra and line spectra: University of Waterloo; Nick Strobel (Bakersfield College): Part 1, Part 2, Part 3
• emission and absorption spectra:
• summary of spectroscopy in astronomy: Horizons, Thomson/Brooks Cole Part 1 ( 9:59), Part 2 ( 9:47)
• additional good summaries: Caryl Gronwall (Pennsylvania State University) Lecture 1 and Lecture 2

• The Doppler effect: Nick Strobel (Bakersfield College)
• qualitative description Horizons, Thomson/Brooks Cole ( 8:03)
• formulas Astronomy Online
• BONUS MATERIAL: applications of the Doppler effect Wikipedia