File:Green Banks - Ewen-Purcell Horn Antenna info.jpg
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Summary
| Description |
English: Plaque next to Ewen-Purcell Horn Antenna now at National Radio Astronomy Observatory in Green Bank, West Virginia. Text of Plaque: This Horn antenna was used by Harold L. Ewen and Edward M. Purcell at the Lyman Laboratory of Physics at Harvard University in 1951 for the first detection of radio radiation from nuclear atomic hydrogen gas in the milky way at a wavelength of 21 centimeters. |
| Date | |
| Source | Own work |
| Author | Jarek Tuszyński |
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Attribution: Jarek Tuszyński / CC-BY-SA-3.0 & GDFL
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 03:47, 26 September 2009 |  | 3,665 × 2,455 (3.23 MB) | Jarekt | {{Information |Description={{en|1=Plaque next to Ewen-Purcell Horn Antenna now at National Radio Astronomy Observatory in Green Bank, West Virginia.Text of Plaque: '' This Horn ant |
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