As radiography students we messed around with these. Sending stupid notes or a sub.
It’s a top notch sandwich delivery system.
Not the same but in a similar vein, I was in a big library once and it was having work done. Inside the ceiling were masses of conveyer belts shipping books to various floors and departments.
I always wanted a hugely impractical 1 metre wide tube for pizza delivery.
Now I wonder if an electromagnetic carriage system in such a tube would work, and if so just how expensive would it be?
Thinking about packet switching in 1 metre tubes is fun too. Almost like designing belts in Factorio. Every house would need an end point, and would you use star network topology?
Beyond pizza, Amazon type deliveries via tube would be great. "Delivered within an hour!"
It’s a top notch sandwich delivery system.
Not the same but in a similar vein, I was in a big library once and it was having work done. Inside the ceiling were masses of conveyer belts shipping books to various floors and departments.