Re:Cave-Link: Underground text communication system
by pja on Wednesday November 10, 2021 @11:41AM
(#29176745)
Nah, it’s electromagnetic & your ears are too small to intercept the transmission to any kind of significant extent.
A few MW sounds a lot, but the inverse square law applies - once you get to the ocean the power density is going to be very low. Plus penetration into the ocean itself isn’t going to be great - there’s an impedence mismatch between the water and the air.
A few MW sounds a lot, but the inverse square law applies - once you get to the ocean the power density is going to be very low. Plus penetration into the ocean itself isn’t going to be great - there’s an impedence mismatch between the water and the air.