The Science-history of the Universe, Volume 3Francis Rolt-Wheeler Current Literature Publishing Company, 1909 - Science |
Other editions - View all
Common terms and phrases
alternating current altho amount apparatus armature atom battery body bolometer carbon cathode caused cell charge circuit coil color condenser conductor connected constructed copper cylinder developed diaphragm dielectric direct current discovery disk distance dynamo earth effect elec electric current electrified electro-magnet electrodes electromotive force energy experiments fact Faraday filament flame force galvanometer gases glass heat hydrogen incandescent inches increase induction induction coil instrument insulated invention iron lamp length Leyden jar light liquid machine magnetic matter ment metal miles mirror molecules motion motor nature needle operation osmium particles pass pendulum plates platinum Poldhu poles pressure produced radiations rays received rotary converter rotating secondary Sir Oliver Lodge sound spark speed station string substance surface tantalum telegraph telephone temperature theory tion to-day tone transformers transmission transmitted tricity tube vacuum vapor velocity vibration voltage volts waves wire
Popular passages
Page 37 - We took then a long glass tube which by a dexterous hand and the help of a lamp was in such a manner crooked at the bottom that the part turned up was almost parallel to the rest of the tube...
Page 174 - ... of those edifices, upright rods of iron made sharp as a needle, and gilt to prevent rusting, and from the foot of those rods a wire down the outside of the building into the ground, or down round one of the shrouds of a ship, and down her side till it reaches the water? Would not these pointed rods probably draw the electrical fire silently out of a cloud before it came nigh enough to strike, and thereby secure us from that most sudden and terrible mischief?
Page 26 - Any two bodies in the universe attract each other with a force which is directly proportional to the product of the masses and inversely proportional to the square of the distance between them.
Page 151 - The unit of force is that force which, acting for one second on a mass of one gramme, gives to it a velocity of one centimetre per second.
Page 99 - And in order thereto, having darkened my chamber, and made a small hole in my window-shuts, to let in a convenient quantity of the sun's light, I placed my prism at its entrance, that it might be thereby refracted to the opposite wall.
Page 48 - The vast interplanetary and interstellar regions will no longer be regarded as waste places in the universe, which the Creator has not seen fit to fill with the symbols of the manifold order of His kingdom. We shall find them to be already full of this wonderful medium; so full, that no human power can remove it from the smallest portion of space, or produce the slightest flaw in its infinite continuity.
Page 101 - I took two boards, and placed one of them close behind the prism at the window, so that the light might pass through a small hole, made in it for the purpose, and fall on the other board, which I placed at about 12...
Page 60 - I was thinking upon the engine at the time and had gone as far as the Herd's house when the idea came into my mind, that as steam was an elastic body it would rush into a vacuum, and if a communication...
Page 265 - Who can but admire the hardihood of invention which devised such very slight means to realize the mathematical conception that, if electricity is to convey all the delicacies of quality which distinguish articulate speech, the strength of its current must vary continuously, as nearly as may be, in simple proportion to the velocity of a particle of air engaged in constituting the sounds.