RedEaredSlider (1855926) writes "Relativity is usually something said to affect only things moving at speeds close to that of light. But now calculations show that the common car battery works because of relativistic effects.
The work was done by a team from Sweden's Uppsala University and the University of Helsinki. They looked at how much energy a lead-acid battery produces if one doesn't take into account relativistic effects. Then they did the same set of calculations including them.
What they found was that a large portion — some 80 percent — of the 2.1 volts a battery produces was from relativistic effects."
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