←back to thread

Build a DIY magnetometer with a couple of seasoning bottles

(spectrum.ieee.org)
96 points nullbyte808 | 1 comments | 29 Nov 25 12:04 UTC | HN request time: 0.218s | source
Show context
mcculley ◴[07 Dec 25 20:28 UTC] No.46184837[source]▶
Could one use something like this from the surface to detect steel submerged under 20-40 feet of water?
replies(1): >>46185002 #
1. sllabres ◴[07 Dec 25 20:47 UTC] No.46185002[source]▶
I think, not from the surface, but have a look here [1], where the author referenced from the IIEE article has build a submergible sensor and detected (a know) boat.

[1] https://alexmumm.de/pgProtonMagMarine_en.htm