Please be Seated. Physics is Phun November 2005 Einstein and the 2005 Year of Physics.
Please be Seated. It’s Physics Physics is Phun November 2007.
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Transcript of Please be Seated. It’s Physics Physics is Phun November 2007.
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Pleasebe
Seated
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It’s Physics
Physics is Phun
November 2007
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How does amagnifying glass
work?
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Why does the pitchof a train whistle
change as itpasses you?
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Fraunhofer Spectrum
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Why do you producean electric spark
when you shuffle across a rug
and touch metal?
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Quantum Mechanical Tunneling
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TriboelectricityThe tribeoelectric series:
+ POSITIVE END OF SERIES glass nylon wool
silkpaper cotton
synthetic rubber saran
polyethylene Teflon
silicone rubber- NEGATIVE END OF SERIES
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Van de Graaff generator
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Charging by Induction
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What causes lightning?
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Electric charge in cloud
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Possible lightning paths
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Charge and image
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The “Leader”
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Main Stroke
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Lightning striking
tree
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Lightning striking Empire State
Building
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Shoes of man struck by lightning
Man not hurt!!
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How does alightning rod work?
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How does amicrowave oven
work?
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Polar Molecule
• Effect of electric field on polar molecule
• http://www.colorado.edu/physics/2000/applets/h2ob.html
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Marie Sophie Germain (1776-1831)
Solved mathematical equations for theChladni Plate experiment.
Received the Napoleon Prize (1 kg gold)for Mathematics in 1816
Sophie’s World web sitehttp://www.geocities.com/Paris/Villa/1776/
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Microwave oven
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Standing waves in oven
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Superheated Waterhttp://www.phys.unsw.edu.au/%7Ejw/superheating.html
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How doPolaroid sunglasses
work?
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Polaroid sunglasses remove horizontally polarized glare
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What makesa rainbow?
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Why do stars“twinkle?”
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Why is the sky blue?
Why is the sunset red?
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Is the sky blue,or does it justlook like it?
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Rayleigh scattering:
Light scatters off dust,O2 and N2
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Sunrise from airplane #3
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Sunrise from airplane #2
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Sunrise from airplane #1
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We are on the web at
http://www.physics.umd.edu/lecdem/
Animated Gifs compliments of bellsnwhistles.com
The EndSee you in January!