Franklin's battery 443 KB See also the electricity instruments
	Battery of nine Leyden jars 373 KB See also the electricity instruments
	Ramsden electrostatic machine 317 KB See also the electricity instruments
	Electrostatic machine with self-excitation Töpler-Voss 272 KB See also the electricity instruments
	Holtz's electrostatic influence machine 133 KB See also the electricity instruments

We are very gratefull to Dr. Francesco Serafini for his help on 3D graphics.

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Last modified: 5 november 2010
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