# 3 Oscillations & Waves

## Meterstick "Kater" Pendulum

Catalog:
3A15.70B
Location:
Ba1
As discribed by Randall D. Peters, "Student-Friendly Percision Pendulum", The Physics Teacher, Vol.37, Oct. 1999. A meterstick setup to oscillate about an axis at its upper end and another axis approximately 66.6cm from the first.

## Pendulum Man (Chaotic pendulum)

Catalog:
3A95.520
Location:
Ba2
A pendulum system that can be configured 68 different ways to demonstrate pendulum motion

## Boomwhackers

Catalog:
3D30.20A
Location:
Bd1
A collection of eight tubes cut to the length for musical notes (from shortest to longest) C,B,A,G,F,E,D, and C with each note a unique color. There are also caps for each tube to change the end of the tube from an antinode to a node. A musical book is included which is color coded for each note.

## Resonance Reeds

Catalog:
3A60.50A
Location:
Ba3
A brass disk spins very fast. As it slows down the shortest "tooth" vibrates. As it further slows the longer teeth vibrate one at a time. A resonance, or vibrating-reed, tachometer uses a series of consecutively tuned reeds to determine engine speed by indicating the vibration frequency of the machine.

## Resonance Reeds

Catalog:
3A60.50C
Location:
Ba3
A set of steel reeds mounted on a common strip which is excited by a variable speed motor with an unbalanced flywheel.

## Variable standing wave machine

Catalog:
3B22.55
Location:
Bb3
Variable standing wave machine

## Spring Coupled Pendula

Catalog:
3A70.27
Location:
Bb1
Four physical pendula are coupled by three springs. Energy is transferred from one pendulum to another.

Catalog:
3B27.20A
Location:
Bb4
Bead model. -1(model), -2(equal amplitude, equal frequency template), -3(half amplitude, double frequency template)

## Moire patterns

Catalog:
3B50.40C
Location:
3_1
Video Encyclopedia :Two transparencies of equally spaced circles on the overhead.

## Doppler balls

Catalog:
3B40.102
Location:
Bc1
Yellow and red balls