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に似ているサイト Physics.Kenyon.Edu
The Telegraph
説明: An assortment of telegraph instrument images compiled from several early physics apparatus collections by Professor Thomas Greenslade Jr. of Kenyon College.
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サイトトピックス: antiques
Glass Insulators were first produced in the 1850's for use with telegraph lines. As technology developed insulators were needed for telephone lines, electric power ...
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Photos of John D. Jenkins' early American, British and French wireless sets and related equipment, mostly dating from the '20s.
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The Telegraph Office -- A Tribute to Morse Telegraphy and Resource for Wire and Wireless Telegraph Historians and Collectors
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The Telegraph Museum on this site contains hundreds of images of American and foreign telegraph instruments from different eras. Presented by Tom Perera, W1TP.
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Sign in to BT Yahoo! Online for email, instant messaging, personalised Internet radio, online protection and your personalised web browser.
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Seattle Community Network, a non profit, free service for our community to provide internet access to all
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Home page for Milestone Technologies, Inc., and Morse Express
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Descriptions of a common telegraph key used by the U.S. Army Signal Corps.
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