Frekuensi amat rendah: Perbedaan antara revisi
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* [[efek kulit]]
== Referensi dan pranala luar ==
* "[http://www.vlf.it/ Radio waves below 22kHz] {{Webarchive|url=https://web.archive.org/web/20110511191554/http://www.vlf.it/ |date=2011-05-11 }}'': ''Nature's singals and strange emission at very low frequency"'' – situs yang mengkhususkan diri pada sinyal frekuensi lemah .
* Jacobsen, Trond, "[http://www.vlf.it/zevs/zevs.htm ZEVS, the Russian 82 Hz ELF transmitter] {{Webarchive|url=https://web.archive.org/web/20110709075829/http://www.vlf.it/zevs/zevs.htm |date=2011-07-09 }}'': A Extrem Low Frequency transmission-system, using the real longwaves" ALFLAB, Halden, Norwegia.
* [http://monographics.iarc.fr/htdocs/monographs/vol80/80.html Non-Ionizing Radiation, Part 1: Static and Extremely Low-Frequency (ELF) Electric and Magnetic Fields (2002)]{{Pranala mati|date=Maret 2021 |bot=InternetArchiveBot |fix-attempted=yes }} oleh [[IARC]].
* [http://www.greenfacts.org/power-lines/index.html A summary of the previous report]{{Pranala mati|date=Maret 2021 |bot=InternetArchiveBot |fix-attempted=yes }} oleh [[GreenFacts]].
* [http://spaceweather.com/glossary/inspire.html NASA live streaming ELF -> VLF Receiver] {{Webarchive|url=https://web.archive.org/web/20110514085532/http://spaceweather.com/glossary/inspire.html |date=2011-05-14 }}
{{spektrum radio}}
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