Please be Seated. It’s Physics Physics is Phun November 2007.

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Presentation transcript:

Please be Seated

It’s Physics Physics is Phun November 2007

How does a magnifying glass work?

Why does the pitch of a train whistle change as it passes you?

Fraunhofer Spectrum

Why do you produce an electric spark when you shuffle across a rug and touch metal?

Quantum Mechanical Tunneling

Triboelectricity The tribeoelectric series: + POSITIVE END OF SERIES glass nylon wool silk paper cotton synthetic rubber saran polyethylene Teflon silicone rubber - NEGATIVE END OF SERIES

Van de Graaff generator

Charging by Induction

What causes lightning?

Electric charge in cloud

Possible lightning paths

Charge and image

The “Leader”

Main Stroke

Lightning striking tree

Lightning striking Empire State Building

Shoes of man struck by lightning Man not hurt!!

How does a lightning rod work?

How does a microwave oven work?

Polar Molecule Effect of electric field on polar molecule

Marie Sophie Germain ( ) Solved mathematical equations for the Chladni Plate experiment. Received the Napoleon Prize (1 kg gold) for Mathematics in 1816 Sophie’s World web site

Microwave oven

Standing waves in oven

Superheated Water Superheated Water

How do Polaroid sunglasses work?

Polaroid sunglasses remove horizontally polarized glare

What makes a rainbow?

Why do stars “twinkle?”

Why is the sky blue? Why is the sunset red?

Is the sky blue, or does it just look like it?

Rayleigh scattering: Light scatters off dust, O 2 and N 2

Sunrise from airplane #3

Sunrise from airplane #2

Sunrise from airplane #1

We are on the web at Animated Gifs compliments of bellsnwhistles.com The End See you in January!