Comentarios de la gente - Escribir un comentario
No encontramos ningún comentario en los lugares habituales.
Otras ediciones - Ver todas
acid action apparatus appears Application dated arrangement body boiler carried caused chamber Charles coal combination communication connected construction containing covered cylinder dated January dated March described direction effect electricity employed engineer experiments fabrics fact February feet fibrous fire fitted fixed force France furnace George give given glass heat Henry Improvements invention consists inventor iron James John Joseph Lancaster light liquid London lower machine machinery manner manufacture March material matter means Mechanics ments metal method Middlesex mode motion nature notice object obtained operation Paris pass Patent dated pipes piston plate portion position preparing present pressure printing produced propeller provements PROVISIONAL quantity railway RECENTLY screw shaft ships side similar smoke SPECIFICATIONS steam substances suitable supply surface Thomas tion tubes valve vessel wheels wire wood
Página 294 - This is in perfect accordance with the principles and with the definite character of the electric force, whether in the static, or current, or transition state. When a voltaic current of a certain intensity is sent into a long water wire, connected at the further extremity with the earth, part of the force is in the first instance occupied in raising a lateral induction round the wire, ultimately equal in intensity at the near end to the intensity of the battery stream, and decreasing gradually to...
Página 37 - An improvement or improvements in the preparation or manufacture of caoutchouc in combination with other substances, which preparation or manufacture is suitable for rendering leather, cloth, and other fabrics waterproof, and to various other purposes for which caoutchouc is employed.
Página 291 - This line of deep-sea soundings seems to be decisive of the question as to the practicability of a submarine telegraph between the two continents, in so far as the bottom of the deep sea is concerned.
Página 294 - ... the same voltaic source, the same current in the same length of the same wire, gives a different result as the intensity is made to vary, with variations of the induction around the wire. The idea of intensity or the power of overcoming resistance, is as necessary to that of electricity, either static or current, as the idea of pressure is to steam in a boiler, or to air passing through apertures or tubes ; and we must have language competent to express these conditions and these ideas.
Página 188 - College, for a means by which iron of every kind may be protected against the action of the weather and of various corroding substances; so that iron, thus protected, will answer for roofing, for cisterns, baths, gutters, window-frames, telegraphic wires, for marine and various other purposes ; and by which brass and copper may be similarly protected.
Página 2 - ... action into four kinds or modes — namely the ordinary, the diamagnetic, the induction of currents, and the rotation of a ray; and points out that any acceptable hypotheses ought to account for the four modes of action, and, it may be added, ought to agree with, if not account for, the phenomena of electro-chemical action also.
Página 293 - Berryman andilaury between the Irish coast and Newfoundland, being 1,500 miles ; and having introduced galvanometers at intervals of about 400 miles, he found that, when the whole 1,500 miles were included, it required two seconds for the electric stream to reach the last instrument which was placed at the end. In this instance the insulation was not as perfect ; still the result shows that it will require a little over two seconds to cross the Atlantic "by telegraph, which is...
Página 475 - Strand, for improvements for solidifying or indurating peat, soft, small, or pulverized coal, and other substances of a like oleaginous or bituminous nature, and machinery and apparatus for effecting the same.
Página 2 - Oersted's discovery of the relation of common magnetism to currents of electricity was recalled to mind : — hence an enormous enlargement of the scope of magnetic force and of our knowledge of its actions ; and hence Ampere's beautiful investigations, and his hypothesis (also sustained by the highest mathematical investigation), — that all magnetic phenomena are due to currents of electricity; and that in such bodies as magnets, iron, nickel, &c. the atoms or particles have naturally currents...