File:CriticalFrequency-NPS.png
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Summary
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| Description |
English: Diagram showing what happens to vertically-propagating EM waves (indicated by red raytraces) that are at a lower frequency than the critical frequencies. The left raytrace is at a higher frequency than the E layer critical frequency, foE, but lower than F layer critical frequency. The right ray is lower than foE. Vertically-propagating waves at higher frequencies than foF2 will not be reflected and will go into space.
Deutsch: Diagramm, das zeigt, was mit sich vertikal ausbreitenden elektromagnetischen Wellen (dargestellt durch rote Strahlen) passiert, die eine geringere Frequenz als die der kritischen Frequenz haben. Der linke Strahl hat eine höhere Frequenz als die kritischen Frequenz der E-Schicht, foE, aber niedriger als die kritische Frequenz der F-Schicht. Der rechte Strahl is geringer als foE. Sich vertikal ausbreitende Wellen mit einer höheren Frequenz als foF2 werden nicht reflektiert und passieren ins All. |
| Date | 1/12/2004 |
| Source | http://www.weather.nps.navy.mil/~psguest/EMEO_online/module3/module_3_2b.html |
| Author | Naval Postgraduate School |
| Permission (Reusing this file) |
http://www.nps.navy.mil/NPS/Disclaimers.htm |
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This file is a work of a sailor or employee of the U.S. Navy, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States.
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
Original upload log
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| Date/Time | Dimensions | User | Comment |
|---|---|---|---|
| 17 April 2008, 21:35:41 | 400 × 200 (12414 bytes) | Sebman81 (talk · contribs) | {{Information |Description=Diagram showing what happens to vertically-propagating EM waves (indicated by red raytraces) that are at a lower frequency than the critical frequencies. The left raytrace is at a higher frequency than the E layer critical frequ |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:09, 3 December 2014 | | 400 × 200 (12 KB) | GifTagger (talk | contribs) | Bot: Converting file to superior PNG file. (Source: CriticalFrequency-NPS.gif). This GIF was problematic due to non-greyscale color table. |
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