File:Variation of utility frequency.svg
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Summary
| Description |
English: Variation of utility frequency over 48 hours for some european and asian countries Deutsch: Variation der Netzfrequenz über 48 Stunden in einigen europäischen und asiatischen Ländern |
| Date | |
| Source | Own work (drawing); Data sets taken from the publication: Math Bollen, Irene Yu-Hua Gu: Signal Processing Of Power Quality, ISBN = 978-0-471-73168-9 |
| Author | wdwd |
Licensing
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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 | 18:29, 15 February 2011 | | 220 × 1,020 (288 KB) | wikimediacommons>Wdwd | == Summary == {{Information |Description={{de| }} |Source={{own}} (drawing); Data sets taken from the publication: Math Bollen, Irene Yu-Hua Gu: ''Signal Processing Of Power Quality'', ISBN = 978-0-471-73168-9 |Date=15.2.2011 |Author=wdwd }} == Licensing |
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