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• Sound and Waves
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Learn how to make waves of all different shapes by adding up sines or cosines. Make waves in space and time and measure their wavelengths and periods. See how changing the amplitudes of different harmonics changes the waves. Compare different mathematical expressions for your waves.

Material Type:
Simulation
Provider:
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Chris Malley
Danielle Harlow
Sam McKagan
07/01/2005
Unrestricted Use
CC BY
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How do microwaves heat up your coffee? Adjust the frequency and amplitude of microwaves. Watch water molecules rotating and bouncing around. View the microwave field as a wave, a single line of vectors, or the entire field.

Material Type:
Simulation
Provider:
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Kathy Perkins
Ron LeMaster
07/01/2004
Unrestricted Use
CC BY
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Did you ever imagine that you can use light to move a microscopic plastic bead? Explore the forces on the bead or slow time to see the interaction with the laser's electric field. Use the optical tweezers to manipulate a single strand of DNA and explore the physics of tiny molecular motors. Can you get the DNA completely straight or stop the molecular motor?

Material Type:
Simulation
Provider:
Provider Set:
PhET Interactive Simulations
Author:
Archie Paulson
Chris Malley
Kathy Perkins
Michael Dubson
Thomas Perkins
08/01/2007
Unrestricted Use
CC BY
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Broadcast radio waves from KPhET. Wiggle the transmitter electron manually or have it oscillate automatically. Display the field as a curve or vectors. The strip chart shows the electron positions at the transmitter and at the receiver.

Material Type:
Simulation
Provider:
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Kathy Perkins
Michael Dubson
Noah Podolefsky
Ron LeMaster
06/02/2008
Unrestricted Use
CC BY
Rating
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This simulation lets you see sound waves. Adjust the frequency or volume and you can see and hear how the wave changes. Move the listener around and hear what she hears.

Material Type:
Simulation
Provider:
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Danielle Harlow
Kathy Perkins
Ron LeMaster
06/01/2004
Unrestricted Use
CC BY
Rating
5.0 stars

Make waves with a dripping faucet, audio speaker, or laser! Add a second source or a pair of slits to create an interference pattern.

Material Type:
Simulation
Provider:
Provider Set:
PhET Interactive Simulations
Author:
Danielle Harlow
Noah Podolefsky
Sam Reid
10/22/2006
Unrestricted Use
CC BY
Rating
5.0 stars

Watch a string vibrate in slow motion. Wiggle the end of the string and make waves, or adjust the frequency and amplitude of an oscillator. Adjust the damping and tension. The end can be fixed, loose, or open.

Material Type:
Simulation
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