Galvanometer Model 11 S (New Style)
|Item||Galvanometer Model 11 S (New Style)|
|Description||In shipping tube|
|Location||Houston Geoscience Center|
Galvos are "motors". We pass current through them in a magnetic field and since the wire carrying the current is shaped in a loop, one side wants to go one way and the other side the other way; so the loop revolves. We glue a mirror on the loop, shine a light on the mirror and when the loop turns the reflected light makes wiggles on a record.