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3-17-00
Sections 12.8 - 12.10
The Doppler effect
The Doppler effect describes the shift in the frequency of a wave sound when the wave source and/or the receiver is moving. We'll discuss it as it pertains to sound waves, but the Doppler effect applies to any kind of wave. As with ultrasound, the Doppler effect has a variety of applications, ranging from medicine (with sound) to police radar and astronomy (with electromagnetic waves).
3-15-99
Sections 12.1 - 12.4
3-1-99
Sections 11.7 - 11.9
We'll shift gears now, spending some time on waves.
12-12-99
Sections 15.7 - 15.12
12-10-99
Sections 15.5 - 15.6
12-8-99
Sections 15.1 - 15.4
12-6-99
Sections 14.7-14.9
Heat transfer
There are three basic ways in which heat is transferred. In fluids, heat is often transferred by convection, in which the motion of the fluid itself carries heat from one place to another. Another way to transfer heat is by conduction, which does not involve any motion of a substance, but rather is a transfer of energy within a substance (or between substances in contact). The third way to transfer energy is by radiation, which involves absorbing or giving off electromagnetic waves.
Heat
12-3-99
Sections 14.1 - 14.6
12-1-99
Sections 13.11 - 13.15
We're now going to draw on much of what we've learned in this course to
understand the motion of gases at the molecular level. We'll examine
the ideal gas law from the perspective of physics, and we'll come to a
deeper understanding of what temperature is.
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