Oscilloscope for EEG monitoring in ESP testing
A Hewlett Packard four-beam oscilloscope for EEG (electroencephalogram) monitoring during ESP testing
Picture No
10634906
Media ID
46092330
Size
3700px x 4672px
(1.1MB)
Credit
Mary Evans Picture Library/John Cutten
Source
Unattributed photograph in the John Cutten Collection
Date
20th century
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