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Morrison, an obscure genius, was before his age, and Ronalds was politely informed by the Government of his day that "telegraphs of any kind were wholly unnecessary." Little instruments for lighting gas by means of the spark are, however, made, and the noxious fumes of chemical and lead works are condensed and laid by the discharge from the Wimshurst machine.
Perhaps the most effective of these is the Wimshurst, which we illustrate in figure 10, where PP are two circular glass plates which rotate in opposite directions on turning the handle. On the outer rim of each is cemented a row of radial slips of metal at equal intervals.
The discharge of this coil appears in the form of powerful brushes and luminous streams issuing from all points of the two straight wires attached to the terminals of the secondary. Now compare this phenomenon which you have just witnessed with the discharge of a Holtz or Wimshurst machine that other interesting appliance so dear to the experimenter.
'I admire your devotion to science, but are you waiting for that thing to get me? "He did not answer, but rigged his apparatus on the top of the cabin. He had a Wimshurst machine to generate a blue spark, you know and this he had attached to the big deck light, from which he had removed the opaque glass. Then he had his camera, with its rock-crystal lens.
But long before Franklin many other scientists had carried out research into the nature of electricity. Remembering Thales of old he coined the word 'electricity'. One of them was a machine consisting of two glass discs revolving in opposite directions which produced high voltage charges through friction. Ramsden and Wimshurst built improved versions of the machine.
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