๐”– Bobbio Scriptorium
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Visibility of Raster Lines in a Television Display

โœ Scribed by ERICKSON, RONALD A.; HEMINGWAY, JOHN C.


Book ID
115382435
Publisher
Optical Society of America
Year
1970
Weight
520 KB
Volume
60
Category
Article
ISSN
0030-3941

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Visibility of facular fields in Mgib-lin
โœ A. A. Galal ๐Ÿ“‚ Article ๐Ÿ“… 1983 ๐Ÿ› Springer ๐ŸŒ English โš– 342 KB

On the basis of photoelectric observations, the center-to-limb variations of the brightness of restricted areas (~0.5" x 7.0") of unresolved facular granules were determined at different frequencies in the lines )~5183 A and 2 5172 A of Mg ~. It was found that the chromospheric plages reach maximum