telescopes are a kind of clock, and we used them for navigation across oceans.
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ooh, i didn't know that. im okay with this kind of clock
aug 30, 2025, 2:07 pm • 1 0 • view
I watched Carl Sagan a lot as a kid 🤣
aug 30, 2025, 2:10 pm • 2 0 • view
IIRC there's this also whole "precise clocks let you measure longitude" thing?
aug 30, 2025, 2:14 pm • 4 0 • view
yep! marine chronometers made the modern world in important ways also time zones, mostly for railways at first iirc
aug 30, 2025, 2:24 pm • 2 0 • view
Exactly this was behind the quest for a reliable maritime clock, as featured in this hit non-fiction book en.wikipedia.org/wiki/Longitu...
aug 30, 2025, 2:24 pm • 3 0 • view