St. John, Thomas M. (Thomas Matthew), b. 1865 · New York, T. M. St. John · leaf 17
^ passing through him before entering the earthby way of the body of the man at the right. II. The Toepler-Holtz Machine, in one form, isshown in Fig. 8. The electricity is produced by theprinciple of indudlion, and not by mere fricflion. Thismachine, used in connection with condensers,… … Fig. 9. 12. The Wimshurst Machine is of recent date, andnot being- easily affecfted by atmospheric changes, is veryuseful for ordinary laboratory work. Fig. 9 shows one form of this machine. 13. Influence Machinesfor Medical Purposes aremade in a large variety offorms. A Wimshurst machineis…
Electricity
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