Jonty Wareing on Nostr: Sometimes you read about old technology, get to the end of the sentence, and have to ...

Sometimes you read about old technology, get to the end of the sentence, and have to read it again because it sounds so completely ludicrous you can't quite believe it actually worked.

Anyway Eidophor projectors are what they used for Apollo Mission Control.

https://en.wikipedia.org/wiki/Eidophor