A Treatise on Mathematical Instruments: Including Most of the Instruments Employed in Drawing, for Assisting the Vision, in Surveying and Levelling, in Practical Astronomy, and for Measuring the Angles of Crystals: in which Their Construction, and the Methods of Testing, Adjusting, and Using Them, are Concisely ExplainedJ. Weale, 1853 - 170 sider |
Andre utgaver - Vis alle
A Treatise of Mathematical Instruments, including most of the instruments ... John Fry HEATHER Uten tilgangsbegrensning - 1864 |
A Treatise on Mathematical Instruments: Including Most of the Instruments ... John F. Heather Uten tilgangsbegrensning - 1849 |
A Treatise on Mathematical Instruments: Including Most of the Instruments ... John Fry Heather Uten tilgangsbegrensning - 1851 |
Vanlige uttrykk og setninger
accuracy accurately adjustment already angle attached axis breadth bubble called chords circle coincide compasses consequently construction copy correction corresponding described direction ditto divided divisions drawing drawn edge equal error extent eye-piece face feet figure fixed foot give given glass greater half horizontal inches instrument latitude length lens lenses less light limb logarithmic lower marked means measured meridian method middle minutes moved nearly object observed obtained pair parallel passes pencil perpendicular plane plate position primary prism projection proportional radius rays reach reading reduced reflected reflector represent round rule scale screw sector seen side sines sliding square station straight subdivisions surface survey taken tangents telescope term third transverse distance triangle tube turning vernier vertical whole wires zero
Populære avsnitt
Side 37 - is equal to the two angles HiA and '-^ HAI; and because the vertical angles AVH and IVE are equal, and that the three angles of every triangle are equal to two right angles, therefore the two angles viE and sEH are, together, equal to the two angles AHv and
Side 83 - 1. Water as a Mechanical Agent. 2. Air as a Mechanical Agent. — Coulomb's Experiments. 3. Mechanical Agents depending upon Heat. The Steam Engine.—Table of Pressure and Temperature of Steam.—General Description of the Mode of Action of the Steam Engine. —Theory of the Steam Engine.— Description of the various kinds of
Side 81 - ENGLAND, with special reference to the origin and progress of the English Constitution, by William Douglas Hamilton, of University College, with Illustrations 1» 2. — Continuation, bringing the History down to a recent period
Side 84 - treated as a means of profitable Employment of Capital; with Examples and Particular of actual Embankments, and also practical Remarks on the Repair of Old Sea Walls, by JOHN Wiaaras,
Side 81 - 5. A Chronology of Civil and Ecclesiastical History, Literature, Science, and Art, from the earliest time to 1850, by Edward Law, vol. i. . . .Is 6. vol. ii. . . . Is 7. Grammar of the English Language, for Schools and Private Instruction
Side 81 - the Art of Enamelling, &c. proving Dwellings, by CB Allen, Architect . ticularly describing the Britannia and Conway Bridges, with the Experiments made to determine their form, strength, and efficiency, by GD Dempsey, CE . CE Plastering, &c., by Geo. R. Burnell, CE Roads, by H. Law, CE of Lighthouses, by Alan Stevenson, LL. B., FRSE, M.
Side 81 - Integral Calculus, in which the Principles are also clearly elucidated, by Homersham Cox, MA of Cambridge . 1«. 103. Collection of Examples of the Integral Calculus, vol. i. by James Hann, Professor, King's College . . . 1». 104. the Differential Calculus, vol. ii. by J. Haddon, MA, King's College . . . .Is. 105. ———— and First Mnemonical Lessons in
Side 81 - Treatise on Navigation, &c., vol. ii ...... Is, - the Principles of the Art of Warming and Ventilating Domestic and Public Buildings, Mines, Lighthouses, Ships,
Side 69 - TT is a telescope formed of two parts, connected by a spherical center-piece, into which are fitted the larger ends of two cones, the common axis of which is placed at right angles to the axis of the telescope, to serve as the horizontal axis of the instrument. The two small ends of these cones
Side 3 - and so on, and we have the following General Rule.—To take off any number to three places of figures upon a diagonal scale. On the parallel indicated by the third figure, measure from the diagonal indicated by the second figure to the vertical indicated by the first.