Image: Cooke and Wheatstone electric telegraph
Size of this preview: 475 × 599 pixels. Other resolutions: 190 × 240 pixels | 2,420 × 3,052 pixels.
Original image (2,420 × 3,052 pixels, file size: 2.15 MB, MIME type: image/jpeg)
Description: William Fothergill Cooke and Charles Wheatstone's electric telegraph ("needle telegraph") from 1837 now in the London Science Museam
Title: Cooke and Wheatstone electric telegraph
Credit: Photo by User:geni
Author: Geni
Permission: CC-BY-SA GFDL
Usage Terms: GNU Free Documentation License
License: GFDL
License Link: http://www.gnu.org/copyleft/fdl.html
Attribution Required?: Yes
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