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Super Moderator
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Alright, that is just too cool, or cold actually Hector ! 馃槑鉂勨泟

Almost is like a neat magic trick, or something the first time
you hear about it, and see it. And I never knew about it until a
few minutes ago. Thanks a bunch for the video, and lesson !!! 馃榾

Always am learning !
 

Aspiring Expert
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Put one drop of water on the crystal, if it spreads out its Glass, if it beads up its Saphire...
 
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Aspiring Expert
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That method works
Did you know that's how the Egyptians invented the Centimeter, they discovered that if you placed one drop of water on a waterproof surface like smooth granite the measurement was always the same no matter where you did the measurement or what time the year the measurement was always the same and thus the meter was born!


Also, the pyramids were pored not cut but that's for a different discussion... ;)
 
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