A history of the growth of the steam-engine . of 84 pounds of coals, or 62,500 foot-pounds of work per pound of fuel. An engine of slight-ly greater size gave a duty about 5 per cent, greater. When Louis XIV. revoked the edict of Nantes, bywhich Henry IV. had guaranteed protection to the Protes-tants of France, the terrible persecutions at once commenceddrove from the kingdom some of its greatest men. Amongthese was Denys Papin. It was at about this time that the influence of the at-mospheric pressure on the boiling-point began to be ob-served, Dr. Hooke having found that the boiling-point was
A history of the growth of the steam-engine . of 84 pounds of coals, or 62,500 foot-pounds of work per pound of fuel. An engine of slight-ly greater size gave a duty about 5 per cent, greater. When Louis XIV. revoked the edict of Nantes, bywhich Henry IV. had guaranteed protection to the Protes-tants of France, the terrible persecutions at once commenceddrove from the kingdom some of its greatest men. Amongthese was Denys Papin. It was at about this time that the influence of the at-mospheric pressure on the boiling-point began to be ob-served, Dr. Hooke having found that the boiling-point wasa fixed temperature under the ordinary pressure of the at-mosphere, and the increase in temperature and pressure ofsteam when confined having been shown by Papin with hisDigester. 46 THE STEAM-ENGINE AS A SIMPLE MACHINE. Dents Papin was of a family -which had attached itselfto the Protestant Church ; but he was given his educationin the school of the Jesuits at Blois, and there acquired hisknowledge of mathematics. His medical education was. Denys Papin. given him at Paris, although he probably received his de-gree at Orleans. He settled in Paris in 1672, with theintention of practising his profession, and devoted all hisspare time, apparently, to the study of physics. Meantime, that distinguished philosopher, Huyghens,the inventor of the clock and of the gunpowder-engine, hadbeen induced by the linen-drapers apprentice, Colbert, nowthe most trusted adviser of the king, to take up his resi-dence in Paris, and had been made one of the earliest mem-bers of the Academy of Science, which was founded atabout that time. Papin became an assistajUt to Huyghens, THE PERIOD OF APPLICATION. 47 and aided him in his experiments in mechanics, hiavingbeen introduced by Madame Colbert, who was also a nativeof Blois. Here he devised several modifications of the in-struments of Guericke, and printed a description of little book was presented to the Academy, and veryfavorably noticed. P
Size: 1452px × 1722px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, bookidc, booksubjectsteamengines
