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Green Tourmaline Crystal as a natural battery-

-  I know that a Green Tourmaline Crystal, when heated, will produce a negative and positive charge  at respective ends of the crystal-so, if the heat source was a  super glass lens ( convex or concave, i am not sure which would work most intensely, with the sun going through  the lens and hitting the crystal-  ( for the ecologically minded)-or a laser- or microwave blast,  would we then have a natural battery?  It may have to be a  large crystal!

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jeff-o7 years ago
Well, if it's less efficient than a standard solar panel I don't see the point, aside from the novelty of it.  But yes, heating the crystal with light would probably do the trick.  As a practical battery, I suspect it's a dead end.
kathleencleans (author)  jeff-o7 years ago
 WELL, I WAS THINKING OF TAKING IT FURTHER- LIKE IF A SOLAR FLARE( NOT A KILL SHOT) FROM THE SUN WERE TO HIT A GIANT GREEN TOURMALINE IN THE DEPTHS OF THE EARTH- WOULD IT MAKE A SHIFT IN MAGNETIC FIELD AS TOURMALINE SENDS OUT BATTERY POWER?
Wow, some imagination!

1.  If a solar flare large enough to reach earth were to actually do so, we'd all be fried instantly.  Every flare is a kill shot.

2.  There is no giant tourmaline crystal inside the earth.  It's mostly iron and nickel.

3.  As lemonie says below, it's a piezoelectric effect, not a "seebeck" effect.  Heat will not make it generate electricity.
kathleencleans (author)  jeff-o7 years ago
Well- quartz clocks run with quartz, plus many other crystals( often wondered why cars don't run on a clockwork mechanism- using wind power from fan in radiator, as car moves all that air wasted!) -Sulfur and topaz have an electrical charge when rubbed,plus -quartz controls radio frequencies- and since we haven't been to the center of the earth- who knows what is in there!
Ah, you misunderstand the function of a crystal in a watch. The crystal doesn't run the watch. Rather, a current is applied to it from a battery, and it vibrates at a set frequency. That frequency is used to accurately control the watch so it keeps proper time. Sulfur and topaz develop a charge from rubbing due to triboelectric charging: http://en.wikipedia.org/wiki/Triboelectric_effect As for what's at the center of the earth (and I may be adding fuel to the fire), it's a solid ball of iron and other elements, surrounded by liquid iron. According to some scientists, the solid core may have crystallized into an aggregate of crystals with similar alignment: http://www.wired.com/wiredscience/2010/05/crystals-earth-core/
atna6 years ago
Tourmaline is PYROelectric and piezoelectric so yes when heated it does form a positive and negative charge at either end when heat is applied. I suspect this has been researched pretty heavily in the past as it's been around probably longer than we have, but try some experiments and let us know the results! I'll do the same
lemonie7 years ago
It's not a battery. It is also piezoelectric like other crystals.
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