Science and Invention Nov 1928 Cover 2

The television image would be viewed through the cone. The image was 1.5 inches square (4 by 4 cm) and had 48 scan lines at 7.5 frames per second. (This was a low definition "48p" display.) The man is using a 125 hertz tuning fork to adjust the scanning wheel to 450 RPM. By looking through the tuning fork at the line pattern on the hub, he could see when the wheel was at the correct speed.

"How to build the S&I Television Receiver" starts on page 618.

Science and Invention, November 1928. Volume 16 Number 7.

Published by Experimenter Publishing. New York, NY.

Editor-in-Chief and Publisher: Hugo Gernsback

Cover Art by R. E. Pattiani.

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The page numbers were on an annual basis, not per issue. This issue had pages 577 to 672. The magazine is 8.5 by 11.5 inches.

mechanical scan television systems science and invention covers science and invention 1928 television receivers tuning forks new york public library

1928

New York Public Library

https://nypl.org

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