Ficheiro:WRNY AD 1928.png
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Resumo
| Descrición |
WRNY Radio Advertisement, 1928. This was Experimenter Publishing's New York City station. WRNY used several frequencies from 1925 to 1934. In the 1920s, a listing of broadcast stations in a magazine or newspaper would use wavelength instead of frequency to specify a station's location on the radio dial. The advertising logo for WRNY shows both, 326 meters and 920 kilocycles. The public was slow to adopt the new "kilocycle" terminology because they could relate to wavelengths. A radio station's antenna was a one-half wavelength long wire between two masts. The unit kilocycle (kc) was replaced by kilohertz (kHz) in the 1960s.
Image cropped from page 644. Image:Science And Invention Nov 1928 644.png 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. |
| Data | Magazine published November 1928, this page scanned July 2008. |
| Orixe | This page was scanned by User:Swtpc6800 on an Epson Perfection 1240U at 300 dpi with half-tone de-screening enabled and stored as TIFF. The image was cropped and touched up in Adobe Photo Elements 5.0. This copy saved as a 150 dpi PNG. |
| Autoría | Experimenter Publishing, owner of WRNY. |
| Licenza (Reuso deste ficheiro) |
This 1928 issue of Science and Invention would have the copyright renewed in 1955. Online page scans of the Catalog of Copyright Entries, published by the US Copyright Office can be found here. http://onlinebooks.library.upenn.edu/cce/ The search of the Renewals for Periodicals for 1954, 1955 and 1956 show no renewal entries for Science and Invention. The copyright on the magazine was not renewed and it is in the public domain. Science and Invention ceased publication with the August 1931 issue. A search of the copyright renewal records from 1951 to 1959 shows no entries for Science and Invention. All issues are in the public domain. |
| Outras versións | Image:Science And Invention Nov 1928 644.png |
Licenza
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Este arquivo está no dominio público nos Estados Unidos xa que foi publicado antes do 1 de xaneiro de 1929.
 Os traballos no dominio público deben ter expirado o seu copyright nos Estados Unidos e no país de orixe para ser subidos a Commons. Se o traballo non é un traballo estadounidense, o ficheiro debe ter unha marca de dereitos de autor adicional indicando o estado do copyright do país de orixe.
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Prema nunha data/hora para ver o ficheiro tal e como estaba nese momento.
| Data/Hora | Miniatura | Dimensións | Usuario | Comentario | |
|---|---|---|---|---|---|
| actual | 22 de xullo de 2008 ás 05:23 | | 750 × 900 (295 kB) | Swtpc6800 | == Summary == {{Information | Description= ''Science & Invention'', November 1928. Volume 16 Number 7. Hugo Gernsback Editor-in-Chief. Published by Experimenter Publishing Company. WRNY Radio Advertisement. The page numbers were on an annual base |
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