iolite
Rating: 23 point(s) | Read and rate text individuallyThe Vikings used thin pieces of iolite as a polarizing filter. This enabled them to determine the exact position of the sun and so to navigate safely far out to sea.
Amount of texts to »iolite« | 1, and there are 1 texts (100.00%) with a rating above the adjusted level (-3) |
Average lenght of texts | 166 Characters |
Average Rating | 23.000 points, 0 Not rated texts |
First text | on Dec 30th 2004, 05:58:15 wrote iolite about iolite |
Latest text | on Dec 30th 2004, 05:58:15 wrote iolite about iolite |
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The Vikings used thin pieces of iolite as a polarizing filter. This enabled them to determine the exact position of the sun and so to navigate safely far out to sea.
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