- Sections
- 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
K8-12. Radiowaves - Standing Waves
Purpose
To demonstrate standing waves using radio waves.
Equipment
Radio wave transmitter with dipole antenna receiver and flashlight bulb indicator.
Suggestions
Turning off most of the lights aids visibility.
Setup Time
5 minutes.
Images
Description
Set transmitter so that the antenna is parallel to the blackboard. (The blackboard
is made of a painted metal sheet.) Hold the receiving antenna parallel to the transmitting
antenna between you and the transmitter, and walk up the steps in the lecture hall.
The bulb will produce maximum glow about every two meters, illustrating standing waves.
References
Operating Instructions, Short Wave Radio Demonstration Apparatus, Cenco No. 080435,
Cenco Scientific Co., Chicago, IL. Richard M. Sutton, Demopnstration Experiments in
Physics, A34-39, 853-859. ◙Lecture Demonstrations Photographs of Demonstrations in
Use.
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See pagesk1. forces on moving charges
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See pagesk2. electromagnetic induction
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See pagesk3. transformers
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See pagesk4. motors & generators
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See pagesk5. electrical properties of matter
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See pagesk6. electric circuits & instruments
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See pagesk7. rlc circuits
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See pagesk8. electromagnetic waves
-
See pagesk1. forces on moving charges
-
See pagesk2. electromagnetic induction
-
See pagesk3. transformers
-
See pagesk4. motors & generators
-
See pagesk5. electrical properties of matter
-
See pagesk6. electric circuits & instruments
-
See pagesk7. rlc circuits
-
See pagesk8. electromagnetic waves