A tone generator inside of a tennis ball produces a doppler shifted sound when it is swung around.
November 14 ,2006
Paul Doherty, Tom Humphrey, Lori Lambertson
Exhibits
Pinhole See your pupil
Bouncing Ball, Listen to the bouncing ball
Bouncing Balls, drop one ballon top of another.
Kettle Drum
Piano Strobe
Where's That Sound?
The workshop activities are available at www.exploratorium.edu/~pauld
When there is relative motion between an object that is emitting sound and a receiver, the frequency of the sound detected by the receiver will be different from the sound emitted by the emitter.
Doppler Snack, a pdf from the original Snackbook.
Hear the doppler effect from a car horn
Sound Circles, Trace the circles of sound emanating from a moving sounds source and see the doppler effect.
Reach out and touch a hot spot hanging in space.
The most sensitive infrared detecting skin on your body is on your cheek and on the back of your hand.
Hot Spot Snack, Make a hot spot exhibit.
Finding images in a mirror, Point at an image from two different locations and locate the image.
Ray Tracing, Trace rays of light to find out where an image will be found.
Light Island, Make rays of light and use then to find images.
Scan a Laser, use a laser to show the path of light reflecting off a curved mirror.
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Scientific Explorations with Paul Doherty |
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30 Oct 2006 |