Posted on 10/26/2017 1:39:00 PM PDT by Oatka
I saw a documentary recently on Viking use of a sun dial for directions along with a crystal ‘sun stone’ to find the sun during overcast days. These would have been used before the astrolabe that was recovered.
Still, it is interesting to see how proficient the ancients were in inventing tools to help them overcome the obstacles to movement around the world.
just a slight update:
Earliest known Mariner’s Astrolabe research published today to go in Guinness Book of Records
EurekAlert!
Public Release: 17-Mar-2019
University of Warwick
https://www.eurekalert.org/pub_releases/2019-03/uow-ekm031519.php
Interesting. Thanks for the update.
My pleasure!
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