ما يقوله الناس - كتابة مراجعة
لم نعثر على أي مراجعات في الأماكن المعتادة.
طبعات أخرى - عرض جميع المقتطفات
1st mag 2nd mag 3rd mag alloy altitude angle appears ascent axis Azimuth balloon barometer Blue bright centre classes cloud coefficients Colour Committee compass conducting power constants copper Crelle determined deviation dew-point diameter direction Division Dry and Wet electrical electrical resistance electromotive force ellipsoid elliptic elliptic integrals ENGLAND AND WALES equations expression feet fixed force formula function galvanometer given Greenwich hard-drawn height homogeneous functions horizontal Hygrometer Ibid inches Inclined instruments integrals invariable plane iron Jacobi's July Kew Observatory length light magnetic memoir mercury meteor miles moon motion mouvement nearly Observatory obtained perpendicular plane position principal axes problem Professor refraction Remarks Report resistance rotation ship spherical pendulum standard surface Temp temperature theorem theory thermometers tion track true anomaly tube unit Ursa velocity velocity of propagation vertical vibrations Vis Viva W. H. Wood wire
الصفحة xvii - To give a stronger impulse and a more systematic direction to scientific inquiry, — to promote the intercourse of those who cultivate Science in different parts of the British Empire, with one another, and with foreign philosophers, — to obtain a more general attention to the objects of Science, and a removal of any disadvantages of a public kind which impede its progress.
الصفحة 108 - Such facts show how indirectly the conditions of life must act. Again, innumerable instances are known to every naturalist of species keeping true, or not varying at all, although living under the most opposite climates. Such considerations as these incline me to lay very little weight on the direct action of the conditions of life.
الصفحة 215 - Report on the Marine Testaceous Mollusca of the North-east Atlantic and Neighbouring Seas, and the physical conditions affecting their development ; — PP Carpenter, Report on the present state of our knowledge with regard to the Mollusca of the West Coast of North America;— TC Eyton, Abstract of First Keport on the Oyster Beds and Oysters of the British Shoreil — Prof.
الصفحة 121 - I am directed by the Lords of the Committee of Council on Education to request that you will be good enough to furnish me with twenty copies of your pamphlet ' On the Opportunities of Advancing Science enjoyed by the Mercantile Marine,' to send to all the Navigation Schools under this department.
الصفحة 103 - ... confounded with the African kinds, are known from them by the short, broad shape of the intermaxillary bone, which is separated from the maxilla by a straight suture, while in the crocodiles of the African rivers the intermaxillary bone is produced behind and between the edge of the maxilla. One species...
الصفحة 383 - ... my legs projected and my arms hung down by my side; that my countenance was serene and placid, without the earnestness and anxiety he had noticed before going into the ring, and then it struck him I was insensible. He wished to approach me, but could not, and he felt insensibility coming over himself; that he became anxious to open the valve, but in consequence of having lost the use of his hands he could not, and ultimately did so by seizing the cord with his teeth and dipping his head two or...
الصفحة 252 - Huyghens' construction, and only attempted at a later date to give it a mechanical basis. In this attempt he failed. " If we reflect," says Stokes, " on the state of the subject as Fresnel found it and as he left it, the wonder is not that he failed to give a rigorous dynamical theory, but that a single mind was capable of effecting so much.
الصفحة 384 - A fourth was thrown out at four miles on descending ; it flew in a circle, and shortly alighted on the top of the balloon. The two remaining pigeons were brought down to the ground. One was found to be dead ; and the other, a carrier...
الصفحة 374 - Regnault's hygrometers, and also to compare the results as found by the two hygrometers together ; to collect air at different elevations ; to note the height and kind of clouds, their density and thickness, at different elevations ; to determine the rate and direction of different currents in the atmosphere, if possible ; to make observations on sound ; to note atmospherical phenomena in general, and to make general observations.
الصفحة 381 - ... saturated with moisture. On emerging from the cloud at Ih. 17m. we came into a flood of light, with a beautiful blue sky, without a cloud above us, and a magnificent sea of cloud below, its surface being varied with endless hills, hillocks, mountain chains, and many snow-white masses rising from it. I here tried to take a view with the camera, but we were rising with too great...