Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: June 29, 2025
They, who join hands, with cold hearts, often cease even to respect one another. They become, in truth, like the pith-ball, in its approach to the electrified cylinder, the more fiercely repelled, the nearer the contact.
Thus, e.g., if we apply the excited sealing-wax to a paper ring, or a pith-ball, hung by a silk thread from a horizontal glass rod, it will, after contact, repel it; and if, thereafter, we apply to it the excited glass rod, it will attract it; or if we first apply the excited glass rod to the paper ring, or pith-ball, it will, after contact, repel it; and if thereafter we apply to it the excited sealing-wax, it will attract it.
Finally, before each screen there was a pith-ball electrometer. A lever handle, J, interposed into the circuit a Volta's pistol, F, that served as a call. When one of the operators desired to send a dispatch to the other he connected the conductor with the machine, and, setting the latter in operation, discharged his correspondent's pistol as a signal.
Lomond, of Paris, devised a telegraph with only one wire; the signals to be read by the peculiar movements of an attracted pith-ball, and Arthur Young witnessed his plan in action, as recorded in his diary. M. Chappe, the inventor of the semaphore, tried about the year 1790 to introduce a synchronous electric telegraph, and failed.
Baxter's inconsistency on this subject would be inexplicable, did we not know his zealotry against Harrington, the Deists and the Mystics; so that, like an electrified pith-ball, he is for ever attracted towards their tenets concerning the pretended perfecting of spiritual sentences by the civil magistrate, but he touches only to fly off again. "Toleration! dainty word for soul-murder!
If, however, we attach a glass handle to the rod and hold it by that whilst rubbing it, the electricity cannot then escape to the earth, and the brass rod will attract the pith-ball. All bodies are conductors of electricity in some degree, but they vary so enormously in this respect that it has been found convenient to divide them into two extreme classes conductors and insulators.
What is peculiarly interesting in Ronalds' apparatus is that it presents for the first time the use of two synchronous movements at the two stations in correspondence. It is based upon the simultaneous working of two pith-ball electrometers, combined with the synchronous running of two clock-work movements. Each of these latter contained one figure, one letter, and a conventional word.
Word Of The Day
Others Looking