Adults Benefit from Internet and Social Technology Too

Image from page 576 of “The Bell System technical journal” (1922)
internet technologies
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Identifier: bellsystemtechni06amerrich
Title: The Bell System technical journal
Year: 1922 (1920s)
Authors: American Telephone and Telegraph Company
Subjects: Telecommunication Electric engineering Communication Electronics Science Technology
Publisher: [Short Hills, N.J., etc., American Telephone and Telegraph Co.]
Contributing Library: Prelinger Library
Digitizing Sponsor: Internet Archive

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Text Appearing Before Image:
Fig. 9—Large grid, liie large grid is a neon lamp with iSUU electrodes on atube bent back andj,forth to form a luminous screen that is visible throughout alarge auditorium. When it is desirable to present television images to a large audience,a special grid type of receiver is used. The grid has the appearanceof an illuminated screen and can be seen throughout a large auditorium.The image is not projected on the screen from a lantern like a movingpicture; such optical projection would be inefficient and demand PRODUCTION OF TELEVISION SIGNALS 571

Text Appearing After Image:
Fig. 10—Detailed structure of the grid. The exterior electrodes are pieces ofmetal foil cemented to the outside of the tube. The interior electrode is a longspiral of wire.

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Adults Benefit from Internet and Social Technology Too
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