How did the ancients determine an equinox?

Subject: How did the ancients determine an equinox?

Date: Tue Apr 17 16:14:07 2001
Posted by Will
Grade level: undergrad School: ProMask, Inc.
City: Houston State/Province: Texas Country: USA
Area of science: Science History
ID: 987538447.Sh

Message:


How did the ancients determine the vernal (or other) equinox?
Wouldn't you have to have some pretty accurate tools to measure
shadows or time or some other effect?
There are some ruins (many actually) that have virtually perfect
equinox alignments built into the structures. How did they do it?
Thanks,
willb

Re: How did the ancients determine an equinox?

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