Browsing named entities in Knight's Mechanical Encyclopedia (ed. Knight). You can also browse the collection for Isaac Newton or search for Isaac Newton in all documents.

Your search returned 52 results in 15 document sections:

1 2
Knight's Mechanical Encyclopedia (ed. Knight), Q. (search)
nt was constructed by Copernicus at Thorn in 1510. In 1590, Davis dispensed with the plumb and adapted the quadrant for use at sea. Previous to this the astrolabe and mariner's cross had been universally employed by seamen for determining the latitude; the longitude was derived from dead reckoning or guess-work. The telescope was adapted to the astronomical telescope by Picard. All these old forms were superseded for nautical purposes by the reflecting quadrant, invented by Sir Isaac Newton, 1670. He communicated the invention to Dr. Halley, who failed to give it publicity, and it was reinvented by Godfrey of Philadelphia, and also by Hadley in England. An instrument constructed on Hadley's plan was submitted to the Royal Society in 1742, and from having been first made known by Hadley, the reflecting quadrant has been generally called Hadley's. This and all similar reflecting instruments are based on the fact that the angle between the first and last directions of a
Knight's Mechanical Encyclopedia (ed. Knight), R. (search)
This mirror being set at an angle of 45°, the perpendicular line of the telescope will become a horizontal line, that is, a line of level. Invented by Cassini. See level. Re-flect′ing-mi′cro-scope. A form of microscope first proposed by Newton, in which the image formed by a small concave speculum may be viewed either by the naked eye or through an eye-piece. Owing to the difficulty of illuminating the object, it was long disused, but has been revived by Professor Amici, who places thot sufficiently so to render the rays reflected from a divergent; they are therefore brought to a focus just in front of the large speculum, forming an inverted image which is viewed by the eye-tube. In the Newtonian form (C), invented by Sir Isaac Newton, 1669, the rays falling on the concave speculum a are intercepted before being converged to a focus by the small plane mirror b, placed diagonally in the main tube, which reflects the image to the eye-piece inserted in the side of the tube.
Knight's Mechanical Encyclopedia (ed. Knight), S. (search)
of a cooling passage around a safe in situ. Newton, 1853, formed a burglar-proof safe consisting stroke. The eye-pointed needle is found in Newton and Archbold's English patent, No. 8,948 of 18e. 30, 1857. 18,880BehnDec. 15, 1857. 19,439NewtonFeb. 23, 1858. 19,823BartholfApr. 6, 1858. 19, 1872. 125,869WilderApr. 16, 1872. 126,829NewtonMay 14, 1872. 126,925BradyMay 21, 1872. 127,1orm of the quadrant of reflection, invented by Newton in 1699 (see quadrant, and is capable of measulained by Galileo, A. D. 1600; investigated by Newton, 1700. Discoursed with Mr. Hooke about the Steinheil's spectroscope and spectrum. Newton, 1675, determined the fact that the solar lighs derived from peat or hydrogenous matters. Newton, 1848, Marcy, 1849, directed a stream of air, ented by Morand of Manchester, is described in Newton's London journal of Arts and science for Decemwould have occupied from 4 to 10 years. General Newton, United States Engineers, who had the gene
Knight's Mechanical Encyclopedia (ed. Knight), T. (search)
ole which stood close to the site of the church of St. Mary-le-strand was begged in 1717 by Sir Isaac Newton, and removed to Wanstead, where it was used in raising the largest telescope then known. — Melbourne, Australia, telescope. The Newtonian telescope (C, Fig. 6272) was invented by Sir Isaac Newton in 1669. A large concave reflector is placed at one end of the tube. At a distance from tvations. Reflecting-telescopes. Fig 6273 represents the reflecting-telescope made by Sir Isaac Newton's own hands, and presented to the Royal Society, in whose possession it remains. Fig. 62weight of the movable portion of the telescope is 9 tons; its cost, $40,000. Telescope of Sir Isaac Newton. In the Gregorian, Cassegrainian, and Newtonian instruments the central rays are lost. ke suggested freezing water as one point. Halley proposed spirit boiling as another point. Newton suggested the boiling point of oil, as the range would be so much increased. He next suggested
Knight's Mechanical Encyclopedia (ed. Knight), U. (search)
nst the interior wall of the former, permitting the two shells to move freely about each other in all directions. Sir Isaac Newton contrived a universal joint for the mounting of his telescope, which was made about 1675, and is now in the possessiale urethra, and bladder; ear, larynx, nares; a hard rubber stop-cock fits the catheter, or trocar, for hydrocele, etc. Newton's universal joint. Un-load′ing ma-chine′. An apparatus for removing freight from boats, cars, or wagons. The usby a blast of air in the eye or a suction-fan to the case, seems to have been invented about 1844. See English patents:Newton, 11,084A. D. 1846. Gordon, 10,163A. D. 1844. Belgian patent:Houyet and GendebeinA. D. 1844. French patents:CabanesMay pound bichromate potash, 3 sulphuric acid, 1 gallon water. Ogden's: 9 bichromate of potash, 40 sulphuric acid, 7 water, Newton: 1 bichromate of potash, 1 sulphuric acid, 12 water. United States Telegraph Company: 6 pounds bichromate of potash, 1 g
1 2