Science and Industry, Հատոր 5Colliery Engineer Company, 1900 |
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alternating current amperes angle arc lamps armature battery belt binding posts boiler brushes building candlepower carbon cause cement cent chimney circuit coal coil columns condenser connected construction copper cylinder diameter distance drawing dynamo electric engine equal feet field fire flange floor flow formula fuel furnace galvanometer gases give heat holes horsepower increase induction coil iron joints lamps length light load machine magnetic means meter method motor obtained ohms operation ordinary piece pipe piston plant plate Portland cement pounds pressure pulley pump purlin repeating coil resistance rheostat rivets SCIENCE AND INDUSTRY Scranton screw shown in Fig shows side square inch steam steel stress supply surface switch temperature tensile strength tensile stress thickness tion tube valve velocity vertical voltage volts wall weight wind wire
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Էջ 102 - That gravity should be innate, inherent, and essential to matter, so that one body may act upon another at a distance through a vacuum, without the mediation of anything else, by and through which their action and force may be conveyed from one to another, is to me so great an absurdity, that I believe no man, who has in philosophical matters a competent faculty of thinking, can ever fall into it.
Էջ 103 - I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea -shore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.
Էջ 102 - You sometimes speak of gravity as essential and inherent to matter. Pray do not ascribe that notion to me, for the cause of gravity is what I do not pretend to know, and therefore would take more time to consider of it.
Էջ 13 - Newton's Three Laws of Motion," and are as follows: (1) All bodies continue in a state of rest, or of uniform motion in a straight line, unless acted upon by some external force that compels a change.
Էջ 294 - It is nothing else,' said the engineer : ' it is light bottled up in the earth for tens of thousands of years, — light, absorbed by plants and vegetables, being necessary for the condensation of carbon during the process of their growth, if it be not carbon in another form, — and now, after being buried in the earth for long ages in the fields of coal, that latent light is again brought forth and liberated, made to work, as in that locomotive, for great human purposes.
Էջ 76 - Hold the book with its back on a smooth or covered table; let the front board down, then the other, holding the leaves in one hand while you open a few leaves at the back, then a few at the front, and so on. alternately opening back and front, gently pressing open the sections till you reach the center of the volume. Do this two or three times and you will obtain the best results. Open the volume violently or carelessly in any one place and you will probably break the back or cause a start in the...
Էջ 76 - ... on, alternately opening back and front, gently pressing open the sections till you reach the center of the volume. Do this two or three times, and you will obtain the best results. Open the volume violently or carelessly in any one place, and you will likely break the back, and cause a start in the leaves. Never force the back. If it does not yield to gentle opening, rely upon it the back is too tightly or strongly lined.
Էջ 40 - Bodies compounded of them ; even so very hard, as never to wear or break in pieces ; no ordinary Power being able to divide what God himself made one in the first Creation.
Էջ 243 - n' all the kentry raoun'; It should be so built that it couldn' break daown: "Fur," said the Deacon, " 't's mighty plain Thut the weakes* place mus' stan' the strain; 'N' the way t' fix it, uz I maintain, Is only jest T' make that place uz strong uz the rest.
Էջ 274 - The first thought that arises in the mind," wrote Faraday, " is that the electricity circulates with something like momentum, or inertia in the wire, and that thus, a long wire produces effects at the instant the current is stopped, which a short wire cannot produce. Such an explanation is however at once set aside by the fact that the same length of wire produces the same effects in very different degrees, according as it is simply extended, or made into a helix, or forms the circuit of an electromagnet.