hide Matching Documents

The documents where this entity occurs most often are shown below. Click on a document to open it.

Document Max. Freq Min. Freq
Southern Historical Society Papers, Volume 21. (ed. Reverend J. William Jones) 12 0 Browse Search
Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War. Volume 4. 10 0 Browse Search
Knight's Mechanical Encyclopedia (ed. Knight) 7 3 Browse Search
Southern Historical Society Papers, Volume 25. (ed. Reverend J. William Jones) 6 0 Browse Search
James Russell Soley, Professor U. S. Navy, Confederate Military History, a library of Confederate States Military History: Volume 7.1, The blockade and the cruisers (ed. Clement Anselm Evans) 6 0 Browse Search
Admiral David D. Porter, The Naval History of the Civil War. 4 0 Browse Search
Southern Historical Society Papers, Volume 35. (ed. Reverend J. William Jones) 3 1 Browse Search
Henry Morton Stanley, Dorothy Stanley, The Autobiography of Sir Henry Morton Stanley 2 0 Browse Search
Harper's Encyclopedia of United States History (ed. Benson Lossing) 2 0 Browse Search
Thomas Wentworth Higginson, Harvard Memorial Biographies 2 0 Browse Search
View all matching documents...

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

Your search returned 5 results in 4 document sections:

Knight's Mechanical Encyclopedia (ed. Knight), A. (search)
aval Observatory of Washington, D. C., is being made by Alvan Clark, of Cambridgeport, Mass., and will probably be completed during the present year (1873). Its object-glass is complete, and has a diameter of 27 inches. It is the largest of its class, and great hopes are reasonably entertained of its performances. Large telescopes, equatorially mounted, are in the observatories of Cambridge, Eng., Cambridge, U. S., Chicago, Albany, Alleghany, and Pulkowa, Russia. The equatorial of Melbourne, Australia, is a reflector. See telescope. As′tro-scope. 1. An astronomical instrument composed of two cones, on whose surfaces the constellations, with their stars, are delineated, and by means of which the stars may be known; an imperfect substitute for the celestial globe. — Webster. 2. An astronomical instrument provided with telescopes, for observing the stars, invented and described by William Shukhard, of Tubingen, in 1698. As-tyl′len. （Mining.) A small-dam in an adit
Knight's Mechanical Encyclopedia (ed. Knight), M. (search)
t start to a regular, systematic mode of recording magnetic observations, taking a large number in the course of his extensive travels and explorations, and calling the attention of the scientific world to the mode and importance of so doing. Observatories, provided with magnetometers and meteorological instruments, and with apparatus for ascertaining the time and true meridian, are now working in concert in many distant stations: Berlin, Paris, Freiburg, Greenwich, Gottingen, Montreal, Melbourne, Cape Town, St. Helena, Simla, Madras, Bombay, Singapore, and probably many other places. It is understood that the observations are made at the same instant of absolute time. Each day is divided into 12 equal periods of 2 hours each, termed the magnetic hours. The mean time at Gottingen is adopted; a tribute to the energy and skill of M. Gauss of the observatory in that city. Mr. Brooke's system of photographic registry is adopted throughout. Magnet-o-mo′tor. A voltaic serie
Knight's Mechanical Encyclopedia (ed. Knight), P. (search)
daguerreotype and the negative-collodion process illustrate this phenomenon. The production of the picture in both cases is by true development, — a term often used, but not applicable in its proper and restricted sense to the bringing out of the picture after the exposure of an asphaltum surface, or of a piece of sensitized carbon tissue. A simple solvent acts in both these cases as the agent for removing the unaffected parts. (Contributed to this work by Mr. J. W. Osborne, late of Melbourne, Australia, and now of Washington, D. C.) The first daguerreotype portrait from life was taken by Professor John W. Draper, in 1839. An announcement was made of it in the London and Edinburgh philosophical magazine, in March, 1840. A full account of the operation was subsequently published in the same journal. The first daguerreotype view taken in America was by Professor John W. Draper, and was a view of the Church of the Messiah, taken from a window of the New York City University. Profe
Knight's Mechanical Encyclopedia (ed. Knight), T. (search)
instead of concave, and that it is placed in the tube at a distance from the larger speculum less than its focal length. A telescope of this kind, having a speculum of 4 feet diameter and 30 feet 6 inches focal length, was sent from England to Melbourne in 1868. The speculum weighed 3,500 pounds, and was composed of 32 parts copper and 1477 tin. Fig 6271 is a representation of the Melbourne telescope, which is really a very fine instrument. The tube is of open work, in order to avoid the working of the mirror. The clock-work for driving the instrument is seen attached to it. The astronomer directs his ocular to a little plane mirror at the upper part of the tube, where the star image is reflected from the parabola. The 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 the larger mirror less than its focal length is placed, at an