Enthiusiastic Scientist Dude Plays With Terminator Metal

TheBackyardScientistPublished: March 31, 2017263 views
Published: March 31, 2017

After seeing a GIF online from a guy squirting molten gallium into a pool of what looked like water in a shallow dish, Kevin Kohler wanted to try it out for himself. In the GIF, they would squirt the liquid metal from a syringe and it would form tiny spheres that after a little bouncing all over the place, would gather back together into one big ball. Kevin tried it at home, but the gallium would just form a blob in the dish, not doing much.

After finding the original video, it turned out that the colorless liquid in the dish was actually sulfuric acid instead of just plain H2O. What is going on is, normally gallium has a very low surface tension, but when you add it to sulfuric acid, a thin skin of gallium sulfate is formed on the surface of the metal, which has a much higher surface tension that the pure metal. That higher surface tension is what pulls the metal back into a sphere.

Gallium isn't the only liquid metal plaything that the <a href="https://rumble.com/TheBackyardScientist/" target="_blank">Backyard Scientist</a> has used in his career. Kevin once tried to do the bottle flip challenge, but instead of filling a bottle with water, he filled it with mercury, making it a <a href="https://rumble.com/v329dr-mercury-bottle-flip.html" target="_blank">mercury bottle flip</a> challenge. Do not try that it home!

Original Video inspiration - https://www.youtube.com/watch?v=iPlhdzMKp6A

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