View source for Detector, Capacitance/Condenser 1

{{Virtual Museum table
|Taxonomy=IMG5026A
|Item=Detector, Capacitance/Condenser 1
|Manufacturer=Petty Geophysical
|Circa=1931
|Location=HGC
|Description=Condenser plate
}}
Two wires from the condenser plates in the detector were connected to an oscillating electronic circuit whose output current varied in practically a straight line relationship with the distance between the condenser plates. Amplification was relatively constant between two and seventy cycles per second. 

[[File:GSH_ IMG5026A.jpg|300px]]