Lessons in elementary physics1884 |
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Page 4
... fact by reference to some other body which is not moving with it . Thus we know that planets are in motion because we see them continually changing their positions among the fixed stars . We know , too , that our earth is in rapid ...
... fact by reference to some other body which is not moving with it . Thus we know that planets are in motion because we see them continually changing their positions among the fixed stars . We know , too , that our earth is in rapid ...
Page 10
... fact , velocity means the whole space moved over divided by the time taken , or calling s the space , S t the time , and ʊ the velocity , then v = — . t Having already fixed upon the metre as our unit of length and the second as our ...
... fact , velocity means the whole space moved over divided by the time taken , or calling s the space , S t the time , and ʊ the velocity , then v = — . t Having already fixed upon the metre as our unit of length and the second as our ...
Page 12
... fact this law of motion represents the state of things under an extreme condition , which can be approached but never reached . 16. We find that friction and the resistance of the atmo- sphere are the two great forces tending to stop ...
... fact this law of motion represents the state of things under an extreme condition , which can be approached but never reached . 16. We find that friction and the resistance of the atmo- sphere are the two great forces tending to stop ...
Page 15
... fact , the motion of the ball relative to the carriage is precisely the same in both cases ; but , on the B other hand , its motion relative to the ground is very different . When the carriage was at rest the ball went from one side A ...
... fact , the motion of the ball relative to the carriage is precisely the same in both cases ; but , on the B other hand , its motion relative to the ground is very different . When the carriage was at rest the ball went from one side A ...
Page 16
... fact , the motion of the balloon and air will have no more effect upon the fall of the feather , than the motion of the earth in its orbit has upon it . But while the fall of the feather is vertically downwards as far as the balloon is ...
... fact , the motion of the balloon and air will have no more effect upon the fall of the feather , than the motion of the earth in its orbit has upon it . But while the fall of the feather is vertically downwards as far as the balloon is ...
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Common terms and phrases
49 metres 98 metres action actual energy angle annealed applied atmosphere attraction ball beam carbonic acid carriage centre of gravity chemical affinity column compression cubic cubic centimetre cylinder denote density displacement distance double earth electricity energy of position equilibrium experiments fact fall fluid focus force of gravity force tending friction gases glass grammes hence increase instance kilogrammes latent heat law of motion length let us suppose liquid luminous mass means mercury metres per second miles mirror molecular momentum moving force oscillation particles pendulum piston plane plate pressure produce proportional ray of light represent resistance rest side solid sound space passed specific gravity specific heat square centimetre steam stone string substance temperature thermometer tube unit upwards vapour various velocity of 98 vertical vessel vibration visible energy visible motion volume wave wave-length weight whole zinc
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