Viking Sunstone CojoArt.com

A thousand years ago, Vikings navigated with a sunstone, which they used to locate the sun on cloudy days. The stone—a calcite crystal called Iceland spar—funnels light into two beams. When the beams appear equally bright, the rock is facing the light, even if it’s obscured. Researchers now use calcite to funnel light around tiny objects for "invisibility" cloaks.

7 Comments

Flora, had nothing for an article today, so she pulled from an old POPSCI article. Way to go Flo!
But the extra Viking info was nice.

.............................
Science sees no further than what it can sense, i.e. facts.
Religion sees beyond the senses, i.e. faith.
Open your mind and see!

Riveting from start to finish.

wtf was the point in this?? can i get paid to write 4 lines of old news?

It's not exactly journalism but I thought it was interesting.

Dear Popsci,
I am willing to recieve a wage for re-writing a paragraph. please send me money.

ROFL @ Flo



June 2013: American Energy Independence

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