A Text-book of Physics1898 - 440 σελίδες |
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Άλλες εκδόσεις - Προβολή όλων
A Text-Book of Physics George Albert Wentworth,George Anthony Hill Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
Συχνά εμφανιζόμενοι όροι και φράσεις
action amperes angle applied axis ball battery body Boyle's law called carbon cell charge chemical circuit CLASS-ROOM EXERCISES coil color conductor convex lens copper cubic cylinder Daniell cell denote density difference direction distance effect elastic electric electromotive force equal example exerted expands Explain fall Find flow friction galvanometer gases glass grams heat Hence horizontal hydrogen increases iron kilogram kinetic energy latent heat length lens lever light lines of force liquid magnet mass mechanical advantage mercury metal meters mirror molecules motion move needle object ohms oxygen parallelogram law pass pendulum piston placed plane pole position potential energy poundals pressure pump quantity rays refraction resistance shown in Fig solid sound specific gravity steam strength substance surface temperature tones tube unit vapor velocity vertical vessel vibration volume wave weight wheel wire zinc
Δημοφιλή αποσπάσματα
Σελίδα 188 - Every body continues in a state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by a force impressed upon it.
Σελίδα 214 - 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.
Σελίδα 62 - A solid immersed in a liquid is buoyed up by a force equal to the weight of the liquid displaced.
Σελίδα 280 - I went into the cube and lived in it, and using lighted candles, electrometers, and all other tests of electrical states, I could not find the least influence upon them, or indication of anything particular given by them, though all the time the outside of the cube was powerfully charged, and large sparks and brushes were darting off from every part of its outer surface.
Σελίδα 199 - To every action there is always an equal and contrary reaction ; or the mutual actions of any two bodies are always equal and oppositely directed.
Σελίδα 192 - Change of motion is proportional to the impressed force and takes place in the direction of the straight line in which the force acts.
Σελίδα 325 - The emf of a battery is 18 volts and its internal resistance 3 ohms. The difference of potential between its poles, when they are connected by a wire A, is 1 5 volts, and falls to 12 volts when A is replaced by another wire B.
Σελίδα 53 - ... a vessel full of water is a new principle of mechanics, and a new machine for the multiplication of force to any required degree, since one man will by this means be able to raise any given weight.
Σελίδα 219 - The work is measured by the product of the force and the distance through which the point of application is moved in the direction of the force.
Σελίδα 285 - If an electrified piece of metal is made to touch a 'gold-leaf electroscope, the leaves separate and, on taking the metal away, they remain separate. But if the electrified metal is only brought near to the electroscope, and then taken away, the leaves separate when the electrified metal is near, but fall together when it is taken away.