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Physics 123A, Summer 2005

Notes and Supplementary Reading

Week 1 Harmonic Motion Interrelationships between position, velocity, acceleration of harmonic motion.

Week 2 Overtones

Beats
Superposition demo of Fig 21-4 in Knight
More of same plus...
Note the speed of sound variation with temperature and other supplementary facts are found here
Short description of Sound Intensity in dB
Longer description of Sound Intensity and Decibels
Review questions for Midterm 1 (taken from old exams)

Week 3
Interference and Wavenature of Light Physlets from Giancoli's Publisher
Fun Doppler Effect Page and Picture of Plane going Supersonic
Interactive Doppler Demo
Full derivation of doppler shift of light equations: HERE
Beats with unequal amplitudes
Extra material off the internet:
Spectral comparisons of Doppler shifted light
More on Doppler shifts of Light and Spectra

Supersonic Explanation
equation is sin θ = 1/Ma where mach, Ma = v/vsound, and
θ is the shock cone angle

Quasar from Fig 20.30 in Knight

Week 4

Extra credit for week 4, due July 17
Explanation of Polarization by Reflection and Brewsters Angle
Polarization by reflection and through crystals

Double slit diffraction, can change variables to see effect
Comparison of single slit, to 2slit, to multiple slit diffraction (building up to grating)
Two source interference demo (can change wavelength and phase)
Single slit diffraction (change λ or d, watch pattern change)
Diffraction of Sound (Speaker Design Issues)
Lens and Mirror Reference Table

Huygens principle animation with a few sources lined up
Huygen's principle with almost continuous line of sources to generate plane waves
Curved Mirrors: Knight does not cover ray tracing of curved mirrors. This simply written version is a decent introduction. The remaining raytracing on lenses is virtually identical. Go through Lessons 3 and 4 here (the sidebar shows several sections in each lesson, they are short and simple), they illustrate how curved surfaces form images.


Week 5 Links to useful waves and optics applets
Giancoli's Publisher Interactive Lens Problems. TRY THESE! Go to Physlets and hit the start buttons.
Huygen's principle for refraction
How rainbows are formed slide show
Interactive demo of raindrop leading to rainbow formation

Extra credit for week 5, due July 24

 

Week 6
Explanation of f-stops and computation of lens "brightness"
Use this explanation instead of what is in Knight

Review for midterm 2 done in class

Week 7
Some simple explanations of the various types of two component optical instruments:
Clear Description of Galilean Telescopes
Clear Description of Astronomical Telescopes
Clear Description of Mirror or Newtonian Telescopes
Clear Description of Field Glasses
Clear Description of the Compound Microscope

Some fun stuff:
Afterimages and other visual effects like optical illusions
Visual sensitivity and color blindness
After images and blind spot discovery

Simple and correct Bragg's equation


Week 8 Blackbody Physlet -Color Temperature
Notes on Quantum Physics
Blackbody radiation addendum

Review questions for MT 3 from old exams

In Class Review August 9th

Week 9

Review powerpoint from August 16

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 Last Updated:
08/16/06

Contact the instructor at: chopelas at u.washington.edu