Elements of Physics |
Contents
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Common terms and phrases
acceleration accordingly ampere atmosphere bottle bound charge called carbon cell charge coil column conductor convex copper cord cubic centimeter cylinder density direction distance dynes earth elasticity electric elasticity electric field electric pressure electrified electrified body electromotive force equal Ether expand experiment feet galvanometer gases glass tube grams gravitation heat hence hydrogen inches increase induced insulated iron kinetic energy LABORATORY EXERCISE length lens light lines of magnetic liquid Luminiferous Ether machine magnetic field magnetic force magnetic pole mass measured mercury metal meter millimeters mirror molecules momentum motion moving needle north-seeking particle pass pendulum piece piston plane plate position potential difference potential energy poundals pounds produced quantity reflected resistance resonator rotation sealing wax seen side solenoid solid solution sound spherical standing waves substance surface temperature thread tion vapor velocity vessel vibration volume wave-front wave-length weight wire zinc
Popular passages
Page 140 - It is hardly necessary to add, that anything which any insulated body, or system of bodies, can continue to furnish without limitation, cannot possibly be a material substance ; and it appears to me to be extremely difficult, if not quite impossible, to form any distinct idea of anything capable of being excited and communicated in the manner the Heat was excited and communicated in these experiments, except it be MOTION.
Page 36 - Every body continues in its state of rest or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed upon it.
Page 413 - As a unit of resistance, the international ohm, which is based upon the ohm equal to 10" units of resistance of the CGS system of electromagnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grams in mass, of a constant cross-sectional area and of the length of 106.3 centimetres.
Page 414 - Henry, which is the induction in a circuit when the electromotive force induced in this circuit is one international volt while the inducing current varies at the rate of one Ampere per second.
Page iii - ... carried out even the humblest research without the spirit of science in some measure resting upon him. And that spirit may in part be caught even without entering upon an actual investigation in search of a new truth. The learner may be led to old truths, even the oldest, in more ways than one. He may be brought abruptly to a truth in its finished form, coming straight to it like a thief climbing over the wall; and the hurry and press of modern life tempt many to adopt this quicker way. Or he...
Page 36 - Change of motion is proportional to the impressed force and takes place in the direction of the straight line in which the force acts.
Page 64 - SPECIFIC GRAVITY. THE Specific Gravity of a body, is the ratio of its weight to the weight of an equal volume of some other body assumed as a standard.