Battery Capacity
Is it really true that a primary cell takes more energy to manufacture
than you'll get out of it, or just an urban myth?
No. My perpetual motion machine runs off them. ;-)
There was a supposed perpetual machine that did. It used 2 battery
piles disguised as just supporting pillars to electrostatically
attract a clock pendulum, and this slight force was enough to keep the
clock running.
NT
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