. Appleton's dictionary of machines, mechanics, engine-work, and engineering. He evidently had a perfect knowledge of the properties of the parabolic reflector, and had alsoa just idea of its correct application as an illuminating instrument, and he also proposed otherand more complete reflectors, similar to those now in use; but like Smeaton, who proposed theuse of lenses, neither seems to have attempted the production of a more perfect method of obtain-ing the artificial light, one thinking candles best, the other preferring a rude oil lamp, The inven-tion of Argands lamp, in 1780, le
. Appleton's dictionary of machines, mechanics, engine-work, and engineering. He evidently had a perfect knowledge of the properties of the parabolic reflector, and had alsoa just idea of its correct application as an illuminating instrument, and he also proposed otherand more complete reflectors, similar to those now in use; but like Smeaton, who proposed theuse of lenses, neither seems to have attempted the production of a more perfect method of obtain-ing the artificial light, one thinking candles best, the other preferring a rude oil lamp, The inven-tion of Argands lamp, in 1780, led the celebrated Chevalier de Borda to propose its union withparabolic reflectors of silver plate, for the illuminating apparatus of light-houses. A suite of Argandlamps and silver-plate parabolic reflectors were accordingly made by Lenoir, the eminent optician, andset up in the Cordouan Light-house in 1783 by M. Teulere, Ingcnicur en chef Fonts <?< Chaussiss, whohad just completed the alteration of that structure, and raised it to its present height of 206 appa
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Keywords: ., bookcentury1800, booksubjectmechanicalengineering, bookyear1861
