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amperes angle axis body called carbon centimeters charge circuit coil conductor constant copper curve cylinder density diameter difference of potential direction disk distance dynes earth electric electrification electromotive force electrostatic units equal equation equipotential surfaces Evidently field flow of force galvanometer given glass grams Hence hydrogen increase induction joules kinetic energy length lens light lines of force liquid magnetic magnetic field mass matter maximum measured medium mercury metal meters millimeter mirror molecules motion moving needle negative opposite oscillation parallel particle Peltier effect perpendicular placed plane plate polarized pole positive potential energy potential-difference pressure prism produced proportional quantity radiation ratio reflected refraction refractive index represents resistance resultant rotation simple harmonic motion solid sound spark specific heat spectrum speed sphere square substance surface temperature tion tube unit vapor vertical vibrations volume wave wave-length weight whence wire zero zinc
Page 68 - Every body continues in its state of rest or of uniform motion in a straight line, except in so far as it may be compelled by impressed forces to change that state.
Page 98 - Newton generalized the law of attraction into a statement that every particle of matter in the universe attracts every other particle with a force which varies directly as the product of their masses and inversely as the square of the distance between them; and he thence deduced the law of attraction for spherical shells of constant density.
Page 619 - The electric fluid is attracted by points. We do not know whether this property is in lightning. But since they agree in all the particulars wherein we can already compare them, is it not probable they agree likewise in this ? Let the experiment be made.
Page 619 - And when the rain has wet the kite and twine, so that it can conduct the electric fire freely, you will find it stream out plentifully from the key on the approach of your knuckle.
Page 827 - His fifth and final claim is of "the method of and apparatus for transmitting vocal or other sounds telegraphically, as herein described, by causing electrical undulations, similar in form to the vibrations of the air accompanying the said vocal or other sounds, substantially as set forth.
Page 619 - Electrical fluid agrees with lightning in these particulars: 1. Giving light. 2. Color of the light. 3. Crooked direction. 4. Swift motion. 5. Being conducted by metals. 6. Crack or noise in exploding. 7. Subsisting in water or ice. 8. Rending bodies it passes through. 9. Destroying animals. 10. Melting metals. 11. Firing inflammable substances. 12. Sulphurous smell.
Page 349 - ... the absolute values of two temperatures are to one another in the proportion of the heat taken in to the heat rejected in a perfect thermo-dynamic engine, working with a source and refrigerator at the higher and lower of the temperatures respectively.
Page 268 - The immediate cause of the phenomena of heat then is motion, and the laws of its communication are precisely the same, as the laws of the communication of motion.
Page 611 - The discharge, whatever may be its nature, is not correctly represented (employing for simplicity the theory of Franklin) by the single transfer of an imponderable fluid from one side of the jar to the other; the phenomena require us to admit the existence of a principal discharge in one direction, and then several reflex actions backward and forward, each more feeble than the preceding, until the equilibrium is obtained.