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Science

Warpy

(113,568 posts)

6. Clear Iceland spar, crystalline calcium carbonate

Reply to Judi Lynn (Original post)

Mon Sep 18, 2023, 12:39 AM

Sep 2023

They worked via polarized lite. A mark on one side would appear as two marks on the other. When the two marks were roughly the same color, they knew the stone was pointed in the direction of the sun, no matter how thick the cloud cover was.

They've found several over the years, the latest in a shipwreck in March, I believe.

Clever people, those Vikings.

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Highlight:

Legendary Viking Sunstones Did Exist: Viking Sagas Were More Truthful Than We Realized [View all] Judi Lynn Sep 2023 OP

I wonder if a Viking sun stone has ever been found? nt mitch96 Sep 2023 #1

Haven't seen anything on it, yet, but I'll be watching. Judi Lynn Sep 2023 #2

The tricky part is staying on the same latitude William Seger Sep 2023 #3

I saw a facinating program about seafaring navigation mitch96 Sep 2023 #4

Kickin' & Rec'n Faux pas Sep 2023 #5

Clear Iceland spar, crystalline calcium carbonate Warpy Sep 2023 #6