Matt Blaze on Nostr: Railroad Code Lines, Harvard, CA, 2010. Railroad "Code lines," with individual wires ...
Railroad Code Lines, Harvard, CA, 2010.
Railroad "Code lines," with individual wires to to control the status of signals and track, were perhaps the earliest electrically managed SCADA systems.
All the pixels at
https://www.flickr.com/photos/mattblaze/4612902834/#photography
Published at
2023-10-18 23:27:40Event JSON
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