19 Feb '13, 1pm

Rube-Goldberg provides liquid refreshment

There are two sets of counterweights used in the design. Some marbles, and what look like giant pinballs. The coin chute, located on the left side of the venting machine, funnels the money into the waiting marble. When the marble rolls off it lands on a spoon. The weight rotates the spoon-filled disk and causes one of the waiting pinballs to drop from their rack. As that metal ball falls it operates a ratcheting system to dispense just one can. It looks like the capacity of the machine is limited to two refreshing cans of sugary liquid, but that could be scaled up if more room were made for cans and counterweights alike.

Full article: http://hackaday.com/2013/02/19/rube-goldberg-provides-liq...

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Different name, same liquid metal batteries!

Different name, same liquid metal batteries!

treehugger.com 19 Feb '13, 10pm

Ambri cofounder Donald Sadoway, a professor of materials chemistry at MIT, conceived of the liquid-metal cell as a way to ...