Gallium is Cool !

Dynoman

Dynoman

Active Member
Gallium is a silvery metal with atomic number 31. It's used in semiconductors and LEDs, but the cool thing about it is its melting point, which is only about 30 degrees Celsius. If you hold a solid gallium crystal in your hand, your body heat will cause it to slowly melt into a silvery metallic puddle. Pour it into a dish, and it freezes back into a solid.

While you probably shouldn't lick your fingers after playing with it, gallium isn't toxic and won't make you crazy like mercury does. And if you get tired of it, you can melt it onto glass and make yourself a mirror.

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http://www.stumbleupon.com/su/1JKy66/dvice.com/archives/2010/12/11-cheap-gifts.php
 
a mate of mine is a tool maker and when he was an apprentice he made a mould of a teaspoon. he used to make teaspoons from that stuff and put them on the tea ladies trolley lol.
 
Gallium is a rare earth metal and is used as a contrast agent in magnetic resonance imaging (MRI), much as iodinated agents, barium and gastrograffin are used in CAT scans.

definitely worth stacking

anyone know where to buy?

I imagine China is a good start

edit - I'm confusing gallium with gadolinium

gallium is used in medical imaging, but in nuclear imaging (some say "unclear imaging" due to the fuzzy pictures) with a radioactive isotope as a tracer
 
Yep gonna do a vid later and some pics.. I've figured the gel might be silicone to keep its shape should it melt in transport, also allows for expansion too when it solidifies. Cool!
 
Comper100 said:
Yep gonna do a vid later and some pics.. I've figured the gel might be silicone to keep its shape should it melt in transport, also allows for expansion too when it solidifies. Cool!
Click to expand...

where did you buy it ?
 
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