Galvanometer (additional)

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Item Galvanometer
Item code
Description String Galvo with viewport
Manufacturer
Circa
Model
Donor Sun Oil
Location Bureau of Economic Geology - The University of Texas at Austin
Serial number
Taxonomy GSH147A

1927 Invented 1925. Prototype stolen. Description: fluctuating currents pass thru a small wire suspended in a magnetic field. Wire vibrates, a light casts shadow of wire, on moving strip of photographic paper. A Time marker casts a shadow across paper each 1/50th of a second

GSH147A.jpg