. Bulletin. Science. Figure 24.—Wheatstone and Cooke's "step- by-step" receiver (top) and transmitter of 1840. From E. Feyerabend, Der Telegraph von Gauss iind Weber. Berlin, 1933, p. 78. PAPER 29: DEVELOPMENT OF ELECTRICAL TECHNOLOGY IN THE 19TH CENTURY: II 295. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution; United States. Dept. of the Interior; United States National Museum. Washington,
. Bulletin. Science. Figure 24.—Wheatstone and Cooke's "step- by-step" receiver (top) and transmitter of 1840. From E. Feyerabend, Der Telegraph von Gauss iind Weber. Berlin, 1933, p. 78. PAPER 29: DEVELOPMENT OF ELECTRICAL TECHNOLOGY IN THE 19TH CENTURY: II 295. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution; United States. Dept. of the Interior; United States National Museum. Washington, Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off
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Keywords: ., bookauthorunitedstatesdepto, bookcentury1900, booksubjectscience
