Timeline for Do radio waves travel around the Earth or through it?
Current License: CC BY-SA 3.0
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| Jun 14, 2016 at 2:31 | comment | added | Selene Routley | Well I wouldn't quite say "excellent": that's why we gave up on shortwave and replaced it with satellite and undersea cable! It's a waveguide for sure, but a stroppy, apt to have bad hairdays one. But +1. | |
| Jun 13, 2016 at 21:54 | history | answered | ProfRob | CC BY-SA 3.0 |