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
Lucius R. Paige, History of Cambridge, Massachusetts, 1630-1877, with a genealogical register 48 48 Browse Search
Harper's Encyclopedia of United States History (ed. Benson Lossing) 24 24 Browse Search
George Bancroft, History of the United States from the Discovery of the American Continent, Vol. 3, 15th edition. 3 3 Browse Search
Knight's Mechanical Encyclopedia (ed. Knight) 3 3 Browse Search
Medford Historical Society Papers, Volume 1. 3 3 Browse Search
HISTORY OF THE TOWN OF MEDFORD, Middlesex County, Massachusetts, FROM ITS FIRST SETTLEMENT, IN 1630, TO THE PRESENT TIME, 1855. (ed. Charles Brooks) 3 3 Browse Search
The Cambridge of eighteen hundred and ninety-six: a picture of the city and its industries fifty years after its incorporation (ed. Arthur Gilman) 2 2 Browse Search
Cambridge History of American Literature: volume 1, Colonial and Revolutionary Literature: Early National Literature: Part I (ed. Trent, William Peterfield, 1862-1939., Erskine, John, 1879-1951., Sherman, Stuart Pratt, 1881-1926., Van Doren, Carl, 1885-1950.) 2 2 Browse Search
Benjamin Cutter, William R. Cutter, History of the town of Arlington, Massachusetts, ormerly the second precinct in Cambridge, or District of Menotomy, afterward the town of West Cambridge. 1635-1879 with a genealogical register of the inhabitants of the precinct. 2 2 Browse Search
H. Wager Halleck , A. M. , Lieut. of Engineers, U. S. Army ., Elements of Military Art and Science; or, Course of Instruction in Strategy, Fortification, Tactis of Battles &c., Embracing the Duties of Staff, Infantry, Cavalry, Artillery and Engineers. Adapted to the Use of Volunteers and Militia. 2 2 Browse Search
View all matching documents...

Browsing named entities in Knight's Mechanical Encyclopedia (ed. Knight). You can also browse the collection for 1707 AD or search for 1707 AD in all documents.

Your search returned 3 results in 3 document sections:

Knight's Mechanical Encyclopedia (ed. Knight), L. (search)
rum at each end; heat at the red end, actinium at the violet end. The amount of dispersion of light, or the length of the spectrum formed by prisms having the same refracting angle, varies greatly in different media. Newton supposed that the dispersion was always proportional to the refraction, but Dollond ascertained that although the average refraction of the ray might be the same in two media, yet the dispersion or diverging effect might be much less in one than in the other. Euler (1707 – 83) was the first to state that it must be possible to produce an achromatic lens by using media of different densities. Dollond, in trying by experiments to disprove this supposition, proved its truth. He adopted flint and crown glass, which have a difference in refractive powers in favor of the latter, accompanied by a still greater difference in dispersive powers in favor of the former. He took two lenses, one concave and the other convex, — which are, in effect, equal to two prisms
Knight's Mechanical Encyclopedia (ed. Knight), S. (search)
built of wrought-iron, high and low steel welded, and franklinite iron. It has hooped body and solid corners, tongued and grooved door with a lever hinge. The joints are packed with rubber to prevent the operation of the air-pump,—a new and dangerous resort of burglars in introducing explosives at the cracks, to blow open the doors. The view shows the outer and inner door open, and also the door of the inclosed coin-safe. The crown jewels of Scotland were, at the time of the Union, in 1707, deposited in an oaken chest. Its lid was secured by three locks, which were forced open in 1818, because the keys could not anywhere be found, leaving us to infer that locksmiths at least were not at that time very expert in the mystery of lock-picking. Old muniment, deed, and cash chests of this kind were strengthened by iron bands, and generally elaborately carved. They were fastened by several padlocks, or by a multiplicity of bolts shot by a single lock; were formerly considered as
Knight's Mechanical Encyclopedia (ed. Knight), T. (search)
e. Fluted tubes are drawn through ornamental dies of the required form. The mandrel is frequently cylindrical. Joint wire is a fine tube used by silversmiths and watch-case makers. A small pipe is threaded on a piece of steel-wire, and both are drawn through a die, like a piece of solid wire. See pipe; lead-pipe. For lead-pipe making and lining with tin, see pages 1271, 1272. For making of gun-barrels, see pages 1032, 1033. For bushing, see page 413. See also pipe, pages 1707, 1708, and list under that head. For tubing for oil-wells, see well-tubing. 2. India-rubber tubes are made: — 1. By wrapping slips of rubber or rubbercloth around a mandrel of glass, which is afterward withdrawn, the layers and the edges being joined by solvents or heat. 2. By driving the pastry mass out through an annular die-opening, in the manner of making lead-pipe (which see). Flexible tubing. The flexible tube (Fig. 6719) has a framework of flattened wire, wound spira