I always wondered whether one could make a fiber optic cable long enough to actually experience the delay:)

@flawr Hmm. I know fiber optic cables have to have repeaters to keep signal strength up, so maybe those alone would introduce too much noise/error?

@El'endiaStarman apparently they use repeaters/amplifiers after 50-100km, but some researcher were able to identify signals at over 12'000km

(12Mm? nobody seems to use that:)

^ I thought this was quite cool how they trained dogs and minks to hunt rats