- A. General Materials & Mathematics
- B. Statics
- C. Kinematics & Dynamics
- D. Rotational Mechanics
- E. Gravitation & Astronomy
- F. Fluid Mechanics
- G. Vibrations & Mechanical Waves
- H. Sound
- I. Thermodynamics
- J. Electrostatics & Magnetostatics
- K. Electromagnetic Principles
- L. Geometrical Optics
- M. Wave Optics
- N. Spectra & Color
- O. Vision
- P. Modern Physics
H2-41. Doppler Ball
To demonstrate the Doppler effect.
Doppler ball on string.
A ball with a 3000 Hz whistle inside is hooked to the end of a cord and whirled about the instructor's head or thrown from person to person. The Doppler effect can easily be heard throughout even a large room.
G. F. Herrenden Harker, The Doppler Effect When Both Source and Observer are in Motion, AJP 12, 175-177, (1944).