Originally posted by Tom Bedlam
Oh, sorry, wrong replies then.
The whole ELF thing has such a lot of oddball baggage attached it's amazing to me. Especially when the information capacity of the channel is so small.
seems like you had a few unpleasant encounters with umm 'ELF centered people' in the past...
Do you think people become violent, sleepy, aggressive et al when lightning strikes nearby? That's a MUCH larger signal, and a shotgun of frequencies to boot.
I guess what's funny is the people that think you can send high-def color movies over ELF. To single targets.
my cats regularly chase each other before thunderstorms, but then it might just be the weather. lightning is strong but it's also of very short duration and life had time to adapt to it. the same applies to the entire natural spectrum and signal patterns, though.
It takes a non-linear function, typically a semiconductor junction - you have to multiply the sidebands and the carrier together to recover the original audio. You can use a multiplier but a diode junction "exposes" a multiplication in its I-V curve.
yeah, begs the question if living tissue exhibits semiconducting properties, doesn't it? amplification to effective levels might be an issue though.
