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Radio antenna tour (depending on weather)
Note wavelength, shape, focusing and overall size
Inverse square law: butter gun
dB and focusing: 3 dB (laptop antenna) vs 30 dB (dish antenna)
java and html5 sims (see previous weblog)
Review sims-see physics.hpa.edu pages
Lab:
Determine the efficiency of the microwave oven.
Look up Watts
Heat a mass of water in an insulated cup
Measure temperature change
Calculate energy captured as heat
Calculate energy expended
Calculate efficiency
~Physics
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