. Carnegie Institution of Washington publication. FIG. 47.—The Bicycle Krgometer. The rear wheel of a bicycle is replaced by a copper disk which can be rotated in the field of a magnet. The strength of the magnet can be varied by the quan- tity of electricity passing through the field coils. The principle is that of the electric Kio. 48.—The Electric Counter. An armature which is attracted by two magnets is caused to actuate the ratchet on a revolution counter. The instrument is connected electrically with the bicycle Please note that these images are extracted from scanned
. Carnegie Institution of Washington publication. FIG. 47.—The Bicycle Krgometer. The rear wheel of a bicycle is replaced by a copper disk which can be rotated in the field of a magnet. The strength of the magnet can be varied by the quan- tity of electricity passing through the field coils. The principle is that of the electric Kio. 48.—The Electric Counter. An armature which is attracted by two magnets is caused to actuate the ratchet on a revolution counter. The instrument is connected electrically with the bicycle 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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Keywords: ., bookauthorcarnegie, bookcentury1900, bookdecade1900, bookyear1905
