Wednesday, March 6, 2013

Viking Navigation...

I've read several times speculation that the Vikings used polarized light to help navigate.  They didn't know that's what they were doing, they just discovered “sunstones” – calcite crystals – that naturally polarized light and could be used to tell where the sun was even on a cloudy day, and before sunrise or after sunset.

Now it appears that scientists have actually found a sunstone in the wreck of a Viking ship.

Awesome dudes, those Vikings...

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