Cave-Link: Underground text communication system

Re:Cave-Link: Underground text communication system by brokenmachine on Wednesday November 10, 2021 @10:26PM (#29184134)

82Hz is an E2, the 19th white key from the lowest on a piano. [1]

So it's fairly low but completely audible.

For megawatts, imagine a million bookshelf speakers playing the lowest note they can play, or 10,000 subwoofers playing the highest note they can play. Most people listen to music at less than a Watt power.

I certainly wouldn't want to live next to that transmitter.

[1] https://en.wikipedia.org/wiki/Piano_key_frequencies

[ Parent | on HN ]

Re:Cave-Link: Underground text communication system by sterlind on Thursday November 11, 2021 @02:51AM (#29185508)

You're fine with hojillions of neutrinos zipping through you. It's not just about power, it's about interaction. How's living near that 82Hz transmitter compare to constantly living around electrical wires acting as 60Hz transmitters? Or a substation, for that matter?

[ Parent | on HN ]

Re:Cave-Link: Underground text communication system by brokenmachine on Monday November 15, 2021 @05:21PM (#29233642)

It's much worse. That's audible. 60Hz wires don't shake the whole house.

[ Parent | on HN ]