A better question is how could you show before telescopes were invented that the earth orbits the sun rather than the sun orbiting the earth. We all observe that the sun, moon and stars rise and set. Sundial design is the same for geocentric and heliocentric systems.
Regards, Roger Bailey Global location: N 48.6°, W 123.4° From: Ruud Hooijenga Sent: June 17, 2019 7:22 AM To: [email protected]; [email protected] Subject: Re: Can a sundial disprove Flat Earth? No, that was not a proof of the globe; just a measurement of its size, assuming the globe. A small, close sun over a flat earth could give the same result for the two locations. However, several other observations had already proved the globe. And you could repeat the Eratosthenes experiment in more than two places, so that the flat earth/local sun assumption would have to be discarded. However, to a dedicated flerfer this will prove nothing, because everything is a NASA hoax (it was even in Eratosthenes' time, apparently). It's no use wrestling a pig - it will only get you dirty, and the pig enjoys it. Rudolf 52-30 N 4-40 E Op 17 juni 2019 om 16:04 schreef [email protected]: Didn't Eratosthenes show that the earth was round by measuring the diameter? --- This email has been checked for viruses by AVG. https://www.avg.com
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