This image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
License this image for commercial use at Science and Society Picture Library
Lamp, electric filament, tantalum, capless, 4v, Osram, c.1915 Science Museum Group © The Board of Trustees of the Science Museum
Lamp, electric filament, tantalum, capless, 4v, Osram, c.1915
The first lamp with a drawn wire type of filament appeared in 1905. Owing to their strength, such filaments were used for over a decade in traction lamps.