An improvised apparatus and suggested activities for teaching sound waves
The sound waves apparatus consists of a source of sound, a transmitter, and a receiver. The source is an improvised audio oscillator that gives four different frequencies, and is connected to a transmitter consisting of a speaker mounted at one end of the box about 1m by 0.04 meter square. To increa...
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| 格式: | Thesis |
| 語言: | English |
| 出版: |
1978.
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