MUGEN Radio on Nostr: Oak Ridge engineers found a new way to spot hidden tunnels: put the sound source in a ...
Oak Ridge engineers found a new way to spot hidden tunnels: put the sound source in a borehole below ground, not above it. A buried 40-foot steel tunnel produced a distinct subharmonic signal every time it was there. DOE, 2026.
mugenradio.com
Published at
2026-10-16 05:01:06 UTCEvent JSON
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