General Electric Co. "Edison Mazda" Light Bulb

General Electric Co. "Edison Mazda" Light Bulb

Current location:

Collection Storage Facility


Ontario Hydro acquired this artifact from the Engineering Department of the University of Toronto in the late 1960s. It was transferred from Ontario Hydro’s Museum of Electrical Progress to the national collection in 1992.

Technical history:

In the 1930s, General Electric and partners came up with this highly efficient light bulb. Afraid of losing profits, power utilities objected. Their goal was to sell as much electricity as possible. Manufacturers compromised and produced a bulb that consumed more energy and customers footed the bill.


With a lifespan of up to 2,000 hours, this incandescent bulb with a coiled tungsten filament was the result of experiments aimed at producing a superior quality, efficient lamp.

Canada Science and Technology Museum
Artifact No.
General Electric Co.
Manufacture Date
Acquisition Date