PHY100 - The Magic of Physics - Spring 2013
Department of Physics, University of Toronto
Prof. Kimberly Strong
Lecture 10 - Thursday, 7 February 2013
Chapter 9 - Sections 9.3 - 9.7
- Light: particle or wave?
- The double slit experiment
- Electromagnetic wave theory of light
- Electromagnetic spectrum
- Solar radiation
Note: These slides do not include all material presented in class - additional material was presented on the blackboard and in demonstrations.
Slides 23-28 have been added to provide an overview of the regions of the electromagnetic spectrum.
(i) Water waves and interference in the ripple tank;
(ii) Interference in overlaid transparencies;
(iii) Young's double slit experiment with a green laser.
(iv) EM fields generated by a charged balloon;
(v) the visible portion of the electromagnetic spectrum;
(vi) a blackbody.
Today's animations:Young's two-slit experiment with laser light: http://www.colorado.edu/physics/2000/applets/twoslitsa.html
Double Slit interactive experiment - this takes a few minutes to load but is worth trying out - shows water, sound, and light: http://phet.colorado.edu/simulations/sims.php?sim=Wave_Interference
Vary wavelength and slit separation in the two-slit experiment: http://dev.physicslab.org/asp/applets/doubleslit/default.asp
Interactive ripple tank animation (the way it should look!): http://www.falstad.com/ripple/ex-2slit.html
The electric field of an oscillating charge (read "About this Animation"!): http://www.upscale.utoronto.ca/GeneralInterest/Harrison/Flash/EM/LightWave/Wave.html
The electric and magnetic fields generated by an oscillating electric charge: http://www.upscale.utoronto.ca/PVB/Harrison/Flash/EM/EMWave/EMWave.html
SOHO images of the Sun: http://sohowww.nascom.nasa.gov/data/realtime/soho/soho_fader.html
Interactive generation of a blackbody spectrum: http://www.colorado.edu/physics/phet/simulations/blackbody/blackbody.swf
||The arrows let you jump to the previous or next class summaries (when posted).
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Last updated February 7, 2013.