The manufacturing is secondary to me, I'm more impressed with exactly how they (old civilizations) managed to get enough accurate data to make astronomical machines so accurate.
i.e. How the hell did the Myan's get accurate enough measurements to produce an calendar that is accurate for over 10,000 years?
they used 3 different calendars based on sun movements and astrological bodies.
I'm aware of how their calendar work but how to you get measurements that accurate to make the calendar in the first place?
i.e. Even if you have the means to accurately measure time (to the second) and you force someone to stare at the sky every night and record the zenith/rise/set event... an error or one or two seconds renders makes the accuracy of the calendar impossible.
TLDR; What's a one second error over 10,000 years? (42.27 days if my math is right)
(post is archived)