- 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
K8-42. Radiowaves - Energy And Dipole Pattern
To demonstrate that energy is transmitted in electromagnetic waves and to show the radiation pattern of the dipole antenna.
Radiowave transmitter and dipole antenna with light bulb indicator.
The receiving antenna can be moved around in space, keeping the two antennas parallel, to observe the dipole radiation pattern. Rotating the receiving antenna to a vertical orientation shows that the radiowaves are polarized.
H. P. Stabler, Apparatus Notes: Pulses on a Transmission Line with a Tektronix 545A
Oscilloscope, AJP 29 #2, ix-x (1961). Ronald I. Rank, Speed of a Pulse in a Transmission
Line, TPT 7, 344-345 (1969). ◙D. J. Martin, Wave propagation in dispersive and attenuation
media: A delay line simulation of plasma waves, AJP 48, 473-477 (1980). ◙Operating
Instructions, Short Wave Radio Demonstration Apparatus, Cenco No. 080435, Cenco Scientific
Co., Chicago, IL. Lecture Demonstration Photographs and description of Demonstration.