•Wikipedia Energy Storage
Boomers-Bank, CO
Energy storage mediums are matter that store some form of energy that can be drawn upon at a later time to perform some useful operation. A device that stores energy is sometimes called an accumulator. All forms of energy are either potential energy ...

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Wikipedia as a medium for energy storage? Well, I suppose you could print out the articles and burn them.

Well, there's the free energy associated with the information in Wikipedia.

G = TS = T (k) ln N = T (R/A) ln N where k is Boltzmann's constant, N is the number of bits, R is the gas constant, A is Avogadro's number and T is Kelvin temp. If we figure N is a conservative trillion bits for the total text of all languages in Wikipedia, you get G = 10^-19 J. About 0.7 of an electron volt. About half enough to make a visible photon, and certainly enough to make a single visible photon, if you count all the information in Commons, which with all those photos, is surely larger.

Thus, Wikipedia has reversed enough entropy, with all that stored information, to be able to turn ambient heat into a single glimmer of light! Be proud!