Waves and Oscillations

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3D 20.10 - Sonometer
	Demonstrates: Effect of tension on a plucked wire. Description: Masses are hung at the end of each wire.

3D 22.30 - Guitar
	Demonstrates: String as a medium for sound and coupled oscillators. Description: A classical guitar.

3D 22.35 - Variable Tension Guitar
	Demonstrates: Change in pitch due to amount of tension the wire feels. Description: One of the strings in a guitar is removed, and replaced with a fishing line. This is connected to a pulley, and then some 1 kg weights. Changing the weight changes the pitch.

3D 30.20 - Bottles
	Demonstrates: Closed-end tubes. Description: Various bottles making various sounds when air is blown across their openings.

3D 30.25 - Harmonica
	Demonstrates: Musical notes. Description: It's an old wood and steel harmonica.

3D 30.30 - Siren Tube
	Demonstrates: Wind rushing past an opened end tube and making lots of noise. Description: Swing the tube overhead in a circle.

3D 30.40 - Closed-end Tubes
	Demonstrates: Sound in a closed tube. Description: Tubes that are closed at each end.

3D 32.10 - Organ Pipe
	Demonstrates: Changing resonance. Description: An adjustable closed flue pipe.

3D 32.50 - Squeaky Bear
	Demonstrates: Loudness due to air being forced through a small hole. Description: When squeaky bear is smacked on a hard surface he squeaks.

3D 32.70 - Recorder
	Demonstrates: Musical Notes. Description: An early member of the flute family. Also known as an English flute.

3D 40.10 - Xylophone
	Demonstrates: Pitch. Description: An alternative to tuning forks.

3D 40.30 - Chladni Plates
	Demonstrates: Shows how the shape affects the resonance modes. Description: Different shaped plates are placed on a oscillator and sprinkled with salt and nodes are seen.

3D 46.10 - Tuning Forks
	Demonstrates: Different frequencies through pitch. Description: When struck each fork has its own pitch / frequency.