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In a standard non-electronic telephone the transmitter is wired between the two incoming wires of the telephone line. A 'carbon granule' transmitter consists of a small tube filled with carbon granules with a piston at one end attached to a diaphragm. Sound waves cause the diaphragm to vibrate and compacts or loosens the granules altering their electrical resistance in sympathy with the sound. This modulates the line current and is received at the telephone exchange via a transformer called a 'transmission bridge'.
What else can I help you with?
What is The part of a sound wave that you hear as loudness?
Amplitude. As the amplitude of the sound wave increases, the sound becomes louder.
Which part of sound wave has molecules that are tightly packed together?
The compression or crest of a sound wave has molecules that are tightly packed together, which leads to higher pressure and increased density compared to the rarefaction part of the wave.
Which part of sound wave has molecules that are not tightly packed together?
rarefraction
Compression happens during which part of the sound wave?
Compression happens during the part of the sound wave where the air particles are pushed closer together, resulting in an increase in air pressure. This creates a region of higher pressure within the sound wave, causing the compression of the air particles.
A sound wave has compressions that are very close to each other What is true about this sound wave?
The frequency of this sound wave is very near constant.
What is receiver capsule?
receiver capsule is a telephone device who can detect sound wave
Why isn't sound a part of the em spectrum?
Sound is a mechanical wave, not an electromagnetic wave.
What are energy transformation in a telephone?
The telephone system converts acoustic energy into electric energy
The higher pressure part of a sound wave is called?
The higher pressure part of a sound wave is called the compression phase. It represents the regions of increased air pressure created by the vibration of a sound source.
What is The part of a sound wave that you hear as loudness?
Amplitude. As the amplitude of the sound wave increases, the sound becomes louder.
Is a sound wave a transverse wave?
No, a sound wave is a compressional wave.
What part of a sound wave changes as its energy decreases?
The amplitude of a sound wave changes as its energy decreases. Amplitude corresponds to the perceived loudness of the sound. As energy decreases, the amplitude of the sound wave decreases, resulting in a quieter sound.
Is a sound wave part of a electromagnetic spectrum?
No, a sound wave is not electromagnetic, it is a pressure wave in the air. The speed of propagation is about 1100 ft/second, so 1 mile in 5 seconds.
Which part of sound wave has molecules that are tightly packed together?
The compression or crest of a sound wave has molecules that are tightly packed together, which leads to higher pressure and increased density compared to the rarefaction part of the wave.
The part of a sound wave where the molecules are spread apart is called?
compression
Which part of sound wave has molecules that are not tightly packed together?
rarefraction
How do you measure the frequency of a sound wave?
Capture the sound with a microphone, feed its output into an oscilloscope with a calibrated timebase. Measure the time period T of the wave on the horizontal axis, then convert it into a frequency ( = 1/T)
