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These experiments and many others were tried in a great variety of ways, until, as the result of all this work, Edison arrived at the principle which has remained in the art to this day. He split up the iron core of the armature into thin laminations, separated by paper, thus practically suppressing Foucault currents therein and resulting heating effect.
It was of the slotted drum type, he at once perceived, built up of laminations of soft steel painted to break up eddy currents, and as he tested the soft amber mica insulation about the commutators of hard-rolled copper, he knew that the defective generator could be repaired in three-quarters of an hour.
Sam, means 'when you hear, it shakes, signifying that the thunder reverberates from the heights owing to its steep side and gives it a tremulous motion. This abrupt, cliff-like side is the western, where the schistose gneiss is exposed for a thickness of 60 feet and more: the stone is talcose, puddinged in places with quartz pebbles, and everywhere showing laminations of black sand.
It was impossible to resist taking her bright brown head between my hands and secreting a kiss somewhere in the laminations of the artisanne cap. "Dear infant! I shall be an unhappy old fellow if I do not see you again very soon." And I was off, dragged by those obligations of the time-table which have no tenderness toward human sentiment. At one o'clock I was at the railway with Sylvester.
" Stone from West Australia, very glassy looking, now thoroughly impregnated with gold; the mammillary formation being particularly noticeable. " Somewhat laminated quartz from Victoria, containing a little antimony sulphide. In this specimen the gold not only shows on the surface but penetrates each of the laminations, as is proved by breaking.
This is an induction coil that is designed especially for wireless telephone modulation. The Magnetic Modulator. This piece of apparatus is also called a magnetic amplifier. The iron core is formed of very thin plates, or laminations as they are called, and this permits high-frequency oscillations to surge in a coil wound on it.
Thus the surface of the river is continually renewed the whole winter through, and a section of the ice crust in the spring would show a series of laminations; here ice upon ice, there ice upon half-incorporated snow, that mark the successive inundations.
From this point, then, through the Burgundian period, and until the rise of the republic, the liberty of the Netherlands, notwithstanding several brilliant but brief laminations, occurring at irregular intervals, seemed to remain in almost perpetual eclipse. The material prosperity of the country had, however, vastly increased. The fisheries of Holland had become of enormous importance.
From this point, then, through the Burgundian period, and until the rise of the republic, the liberty of the Netherlands, notwithstanding several brilliant but brief laminations, occurring at irregular intervals, seemed to remain in almost perpetual eclipse. The material prosperity of the country had, however, vastly increased. The fisheries of Holland had become of enormous importance.
No poetry comes by the elevation of prose; but the half of prose comes by the "massing into the common clay" of thousands of winged words, whence, like the lovely shells of by-gone ages, one is occasionally disinterred by some lover of speech, and held up to the light to show the play of colour in its manifold laminations.
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