File:Edison incandescent lights.jpg

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Edison_incandescent_lights.jpg(737 × 388 pixels, file size: 84 KB, MIME type: image/jpeg)

Summary

Photo of early paper filament incandescent electric light bulbs invented by Thomas Alva Edison in 1879. The caption read: 'Edison's famous horseshoe paper-filament lamp of 1870. Copyright 1904 by William J. Hammer.' Alterations: cropped out caption and frame, increased brightness slightly.

Licensing

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File history

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Date/TimeThumbnailDimensionsUserComment
current03:24, 4 January 2017Thumbnail for version as of 03:24, 4 January 2017737 × 388 (84 KB)127.0.0.1 (talk)Photo of early paper filament incandescent electric light bulbs invented by Thomas Alva Edison in 1879. The caption read: 'Edison's famous horseshoe paper-filament lamp of 1870. Copyright 1904 by William J. Hammer.' Alterations: cropped out caption and frame, increased brightness slightly.
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