Proceedings of the American Academy of Arts and Sciences, Volumen7Metcalf and Company, 1868 Vol. 12 (from May 1876 to May 1877) includes: Researches in telephony / by A. Graham Bell. |
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Página 63
... length of 15 inches , and lastly the size of the prisms , and of the various parts of the instrument , is adapted to these dimensions . With a more powerful instrument a larger number of aqueous lines would be seen under the same atmos ...
... length of 15 inches , and lastly the size of the prisms , and of the various parts of the instrument , is adapted to these dimensions . With a more powerful instrument a larger number of aqueous lines would be seen under the same atmos ...
Página 69
... length , and that its four angles may be always the same † and he still further adds , " The construction of the cell , then , is demonstrated to be such that no other which could be con- ceived would take so little material and labor ...
... length , and that its four angles may be always the same † and he still further adds , " The construction of the cell , then , is demonstrated to be such that no other which could be con- ceived would take so little material and labor ...
Página 74
... length becomes com- plete , so that one of the faces is lost and a new one formed , all the basal portion of the cell becomes reversed , as will be seen by reference to Figs . 1 and 2 ; the first rep- resenting the cells when the base ...
... length becomes com- plete , so that one of the faces is lost and a new one formed , all the basal portion of the cell becomes reversed , as will be seen by reference to Figs . 1 and 2 ; the first rep- resenting the cells when the base ...
Página 82
... length , but in direction . 3d . The variation in the diameters does not depend upon accidental distortion , but upon the manner in which the cell was built . 4th . The relative size of the rhombic faces of the pyramidal base is liable ...
... length , but in direction . 3d . The variation in the diameters does not depend upon accidental distortion , but upon the manner in which the cell was built . 4th . The relative size of the rhombic faces of the pyramidal base is liable ...
Página 87
... length , is packed with pure asbes- tos ; between b and c , space of about two inches , -being left vacant , a plug - a of asbestos is placed at e ; b C the space between c and d , 4 to 5 inches in length , is filled with an intimate ...
... length , is packed with pure asbes- tos ; between b and c , space of about two inches , -being left vacant , a plug - a of asbestos is placed at e ; b C the space between c and d , 4 to 5 inches in length , is filled with an intimate ...
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Pasajes populares
Página 130 - The Vegetable Kingdom, or the Structure, Classification, and Uses of Plants, illustrated upon the Natural System.
Página 496 - Two reports have recently been issued on rates of deck watches and of box and pocket chronometers on trial for purchase by the Board of Admiralty at the Royal Observatory, Greenwich, in the latter half of last year.
Página 16 - Report of the Astronomer Royal to the Board of Visitors of the Royal Observatory, Greenwich, read at the Annual Visitation of the Royal Observatory, 1860, June 2; and Address of the Astronomer Royal to the Board of Visitors, 1860, May 12.
Página 26 - Statistics of the Foreign and Domestic Commerce of the United States. .... Communicated by the Secretary of the Treasury, in Answer to a Resolution of the Senate of the United States, March 12, 1863.
Página 28 - An address delivered at the anniversary meeting of the Geological Society of London, on the 19th of February, 1841 ; and the announcement of the award of the Wollaston medal and donation fund for the same year.
Página 507 - ANNUAIRE DE CHIMIE, comprenant les applications de cette science à la médecine et à la pharmacie, ou Répertoire des découvertes et des nouveaux travaux en chimie faits dans les diverses parties de l'Europe ; par MM. E.
Página 311 - THE GEOLOGY OF PENNSYLVANIA: A Government Survey ; with a General View of the Geology of the United States, Essays on the Coal- Formation and its Fossils, and a Description of the Coal-Fields of North America and Great Britain.
Página 13 - Report to the Legislature of Massachusetts relating to the Registry and Return of Births, Marriages and Deaths in the Commonwealth for the year ending December 31, 1880.
Página 14 - Annual Report of the Trustees of the Museum of Comparative Zoology at Harvard College, in Cambridge, together with the Report of the Director, 1864.
Página 47 - ... cylinders, welded together endwise. Each ring was made of bars wound upon an arbor spirally, like winding a ribbon upon a block, and, being welded and shaped in dies, were joined endwise, when in the furnace and at a welding heat, and afterwards pressed together in a mould, by a hydrostatic press of 1,000 tons force.