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Updated: May 31, 2025
"The amount of heat lost by a body is in proportion to the radiating surface of that body. If one square inch of platina be heated to 100 degrees it will fall to, say, zero in one second, whereas, if it was at 200 degrees it would require two seconds.
Hopkinson, I mentioned to him that the Abbe Rochon, who discovered the double refracting power in some of the natural crystals, had lately made a telescope with the metal called platina, which, while it is as susceptible of as perfect a polish as the metal heretofore used for the specula of telescopes, is insusceptible of rust, as gold and silver are.
"In cases when I had procured much soda, the glass at its point of contact with the wire seemed considerably corroded; and I was confirmed in my idea of referring the production of the alkali principally to this source, by finding that no fixed saline matter could be obtained by electrifying distilled water in a single agate cup from two points of platina with the Voltaic battery. "Mr.
I saw a small cask full of 'platina del Pinto', which she told me she could transmute into gold when she pleased. It had been given her by M. Vood himself in 1743. She shewed me the same metal in four phials.
'You would have taken Castle S. Angelo for Phalaris' bull, writes Platina; 'the hollow vaults did so resound with the cries of innocent young men. No evidence of a conspiracy could be extorted. Then Paul tried the survivors for unorthodoxy. They proved the soundness of their faith to the satisfaction of the Pope's inquisitors.
The dice have been found loaded with platina, so that "doublets" come up every time.
For the Turks, having no notion of letters and being, even by their religion, forbid the use of them, except for reading and transcribing the Koran, they have no historians of their own, nor any authentic records nor memorials for other historians to work upon; so that what histories we have of that country are written by foreigners; as Platina, Sir Paul Rycaut, Prince Cantimer, etc., or else snatches only of particular and short periods, by some who happened to reside there at those times; such as Busbequius, whom I have just finished.
The streams under the furnaces gave out to the sponges of platina a heat which was regularly kept up and distributed. They also heated a distilling apparatus, which, by evaporation, furnished excellent drinkable water. Near this kitchen was a bathroom comfortably furnished, with hot and cold water taps. Next to the kitchen was the berth-room of the vessel, sixteen feet long.
When any substance was introduced into this arch, it instantly became ignited; platina melted as readily in it as wax in a common candle; quartz, the sapphire, magnesia, lime, all entered into fusion; fragments of diamond and points of charcoal and plumbago seemed to evaporate in it, even when the connection was made in the receiver of an air-pump; but there was no evidence of their having previously undergone fusion.
It was simply a free union of individuals, and was connected with no fixed institution. Besides the occasions mentioned, it met at the invitation of a patron, or to celebrate the memory of a deceased member, as of Platina.
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