Lec 23: Doppler Effect, Binary Stars, Neutron Stars, Black Holes | 8.01 Classical Mechanics (Lewin) @ForTheAllureOfPhysics

Uploaded December 2014 | Updated September 2026, 2 hours ago

Doppler Effect, Binary Stars, Neutron Stars and Black Holes. Doppler shift is introduced with sound waves, then extended to electromagnetic waves (radiation). The Doppler shift of stellar spectral lines and/or pulsar frequencies provides a measure of the line-of-sight (so-called radial) velocity of the source relative to the observer. Combined with Newton's law of universal gravitation, this can lead to the orbital parameters and the mass of both stars in a binary star system.

This lecture is part of 8.01 Physics I: Classical Mechanics, as taught in Fall 1999 by Dr. Walter Lewin at MIT.

This video was formerly hosted on the YouTube channel MIT OpenCourseWare.
This version was downloaded from the Internet Archive, at archive.org/details/MIT8.01F99/.

Attribution: MIT OpenCourseWare
License: Creative Commons BY-NC-SA 3.0 US
To view a copy of this license, visit creativecommons.org/licenses/by-nc-sa/3.0/us/.
More information at http://ocw.mit.edu/terms/.

This YouTube channel is independently operated. It is neither affiliated with nor endorsed by MIT, MIT OpenCourseWare, the Internet Archive, or Dr. Lewin.

Lec 23: Doppler Effect, Binary Stars, Neutron Stars, Black Holes | 8.01 Classical Mechanics (Lewin)

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