Rudimentary Magnetism: Being a Concise Exposition of the General Principles of Magnetical Science and the Purposes to which it Has Been Applied ...J. Weale, 1850 |
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Términos y frases comunes
agate annexed Fig attraction axis azimuth bodies brass Brook Taylor centre circle coil compass compound magnet considered Coulombe curve cylinder deflected degrees determined deviation diameter dipping needle direction distances inversely ditto earth east electrical electrical currents electro-magnetic employed experiment extremity fixed fluid given hence horizontal needle inches in length inclination induction instrument intensity isoclinal lines isogonal lines law of magnetic lodestone magnetic bar magnetic condition magnetic force magnetic meridian magnetic needle magnetic poles magnetometer magnetoscope mass metallic method motion moveable netic north pole obliquity observed obtain operation opposite poles oscillation Paramagnetic particles phenomena placed plane polarity position Professor Barlow quantity ratio reciprocal represented repulsive result right angles ROTATORY MAGNETISM ship ship's head similar soft iron south pole steel substance suppose surface suspended termed terrestrial magnetic tion turned variation vertical vibrations Voltaic whilst wire zinc
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Página 53 - But whether elastic fluids do really consist of particles so repelling each other, is a physical question. We have here demonstrated mathematically the property of fluids consisting of particles of this kind, that hence philosophers may take occasion to discuss that question.
Página 2 - WORKSHOP COMPANION. Comprising a great variety of the most useful Rules and Formulae in Mechanical Science, with numerous Tables of Practical Data and Calculated Results for Facilitating Mechanical Operations. By WILLIAM TEMPLETON, Author of " The Engineer's Practical Assistant, "&c., &c. Eighteenth Edition, Revised, Modernised, and considerably Enlarged by WALTER S. HUTTON, CE, Author of "The Works' Manager's Handbook," " The Practical Engineer's Handbook,
Página 131 - A compilation from earlier historical works made, in the form in which we have it, at the end of the thirteenth or the beginning of the fourteenth century and known by the name of WALTER OF COVENTRY (W.
Página 100 - spot in which they have found the needle perpendicular — that is, the pole itself — is precisely that point on my globe and chart in which, by supposing all the lines to meet, the several curves would best preserve their unity of character, both separately and conjointly, as a system.
Página 169 - ... one being the distance of the centre of the plate below the pivot of the needle, and the other its distance from the centre line of the pedestal ; and at this depth and distance in the line of no attraction, already mentioned, the plate is ultimately to be fixed.
Página 109 - ... is the smallest number divisible at once by all the four periods, and hence the shortest time in which the four poles can accomplish a cycle. Now this time coincides exactly with the period in which the precession of the equinoxes completes its cycle. Certainly curious and remarkable series of coincidences.
Página 72 - ... has thus been rendered visible, revolution of the eye-piece to the right or left, more or less, will cause its extinction ; and the further motion of the eye-piece to the one side or other of this position will produce the reappearance of the light, and that with complementary tints, according as this further motion is to the right- or left-hand.
Página 157 - Cook our illustrious navigator in his second voyage of discovery, stating distinctly that " variations observed with the ship's head in different positions, and even in different parts of her, will materially differ from one another ; and much more will observations observed on board different ships.
Página 185 - NAVAL ARCHITECTURE; OR, THE RUDIMENTS AND RULES OF SHIP BUILDING ; exemplified in a series of draughts and plans, with observations tending to the improvement of that important art.
Página 3 - NAVAL ARCHITECTURE; Or, the RUDIMENTS and RULES of SHIP BUILDING : exemplified in a SERIES of DRAUGHTS and PLANS ; with Observations tending to the further Improvement of that important Art. Dedicated, by permission, to His late Majesty. By MARMADUKE STALKARTT, Naval Architect. 59. Three vols. large 4to., numerous fine Plates. Price £3. 3».