PBS
Pbs Teachers: Stellar Fingerprints: The Spectra of Stars
Identify the composition of stars by applying the ideas of quantum theory. Investigate the field of spectroscopy, and examine the spectra of stars to locate the emission and absorption lines of hydrogen.
CK-12 Foundation
Ck 12: Physics Simulation: Marina
[Free Registration/Login Required] Learn about the interference and diffraction patterns that result when a wave passes through one or two thin openings using this interactive simulation. A PDF worksheet and a video tutorial are also...