ID:
2692
Maker's Name:
W & J George, Birmingham, Eng.
Where made:
England
Where used:
UQ Teaching Labs
Dimensions:
12.5 × 10.5 × 4 cm
A simple tangent galvonometer for student use. It stamped G56, the original number of one of the ground floor labs in the Parnell Building.
A tangent galvanometer is simply a magnetic compass with a coil added that generates a magnetic field perpendicular to the Earth's (when the instrument is correctly oriented.)
That field deflects the needle through an angle depending on the strength of the current. The principle goes back to the earliest days of electrical measurements.
