Oscillations and Waves
3B - Wave Motion
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3B 10.10 - Standing Waves:
Demonstrates: Constructive interferenc. Description: A rubber rope is attached to the wall. Instructor is the oscillator. |
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3B 10.30 - Black Wave Table:
Demonstrates: Standing waves, reflected waves. Description: Carefully move the end rod up and down to create wave. |
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3B 10.35 - Red Wave Table:
Demonstrates: Standing waves, reflected waves. Description: Carefully move the end rod up and down to create wave. |
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3B 10.50 - The Sine Wave:
Demonstrates: Phase and harmonic components of the sine wave. Description: A mechanical representation of a sine wave. |
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3B 20.20 - Anchored Slinky:
Demonstrates: Transverse and longitudinal wave motion. Description: A spring laid down on its side, fixed at one end. |
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3B 20.25 - Slinky:
Demonstrates: Waves. Description: A tight steel spiral. Good Great Fun! |
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3B 22.20 - Flame Tube (Sonic Tube o' Fire):
Demonstrates: Wave Propagation. Description: Up to 9 standing waves can be illustrated. Lower frequencies causes fewer waves. |
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3B 30.30 - Bell in a Vacuum:
Demonstrates: Sound does not travel in a vacuum. Description: A bell is inside a bell jar which can be evacuated. |
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3B 39.10 - Tin Can Phone:
Demonstrates: Sound travels through medium other than air. Description: Sound travels through a metal spring from one end of the phone to the other. |
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3B 40.10 - Doppler Effect Arm:
Demonstrates: Sound frequency changes. Description: A Sonalert siren swings around to show effect. |
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3B 40.20 - Doppler Effect Ball:
Demonstrates: Doppler effect on sound. Description: A Nerf ball with a small speaker inside that can be thrown around by students. |
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3B 45.15 - Ripple Tank:
Demonstrates: Concept of light waves. Description: Shadows from waves created in the tank are projected on to a screen. |
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3B 50.40 - Moire Pattern Transparencies:
Demonstrates: Two-source interference. Description: Use two transparencies with overhead projector. Rotate top sheet for effect. |
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3B 60.10 - Differential Tuning Forks:
Demonstrates: Changing frequencies. Description: Stops can be moved to change the pitch. |
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3B 60.20 - Beats:
Demonstrates: Pure tones with slightly different frequencies. Description: Beats occur when one speaker's frequency varies slightly from the other's. |
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3B 60.40 - Metronome:
Demonstrates: Beats. Description: An adjustable time keeping device found in almost every piano teacher's home. |
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3B 70.10 - Coupled Tuning Forks:
Demonstrates: Louder sound at same frequency. Description: Tuning fork can be placed on the resonance box. |