Block 25 of Story of E.A.T. Part I (Q24659)
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Block 25 of Story of E.A.T. Part I
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Block 25 of Story of E.A.T. Part I |
Block 25 of Story of E.A.T. Part I |
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25
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Alex Hay wanted to pick up body sounds: brain waves, muscle activity and eye movements. Pete Kaminski, Fred Waldhauer and Cecil Coker built a battery-driven differential amplifier which had a peak gain of 80 db from 1/2 Hz to 10 Hz. The whole unit, batteries and all fit into a 1 by 3 by 5 inch box, no mean feat to do this in 1966. The signal from the differential amplifier was fed into a v...
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