Did Vikings navigate by polarized light?
Medieval History

Did Vikings navigate by polarized light?


A Viking legend tells of a glowing 'sunstone' that, when held up to the sky, revealed the position of the Sun even on a cloudy day. It sounds like magic, but scientists measuring the properties of light in the sky say that polarizing crystals ? which function in the same way as the mythical sunstone ? could have helped ancient sailors to cross the northern Atlantic. A review of their evidence is published today in Philosophical Transactions of the Royal Society B1.

The Vikings, seafarers from Scandinavia who travelled widely and settled in swathes of Northern Europe, the British Isles and the northern Atlantic from around 750 to 1050 AD, were skilled navigators, able to cross thousands of kilometres of open sea between Norway, Iceland and Greenland. Perpetual daylight during the summer sailing season in the far north would have prevented them from using the stars as a guide to their positions, and the magnetic compass had yet to be introduced in Europe ? in any case, it would have been of limited use so close to the North Pole.

Click here to read this article from Nature.com

Click here to read a similar article from MSNBC

Click here to read the article published in Philosophical Transactions of the Royal Society




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