The Elements of Physics: For Use in High Schools |
Other editions - View all
Common terms and phrases
acceleration angle angular momentum angular speed axis Boyle's Law called cell centimetres centre of mass circuit coil conductor constant copper Defining equation definite denote density direction displacement distance disturbance dynes earth earth's atmosphere elasticity electric current electroscope equal evident exerted experiment fact flame frequency galvanometer glass grammes gravity heat hence inclined plane indicated in Fig inertia interval iron Kundt's tube lens light linear lines of force liquid longitudinal LONGITUDINAL WAVE measured mechanical advantage mercury metres millimetres nodes observed particle pendulum physics piston pitch pole potential energy pressure produce pump quantity ratio rays refraction rotation rubber shown in Fig Simple Harmonic Motion simply sound waves straight line stretched string student surface t₁ temperature tion train of waves tube unit valve vector velocity vessel volume water waves wave front wave length wave motion weight wheel wire
Popular passages
Page 339 - ... (we took, I say, care) that the air at last included in the shorter cylinder should be of the same laxity with the rest of the air about it. This done, we began to pour quicksilver into the longer leg of the siphon, which by its weight pressing up that in the shorter leg, did by degrees...
Page 339 - ... the included air ; and continuing this pouring in of quicksilver till the air in the shorter leg was by condensation reduced to take up but half the space it possessed (I say possessed, not filled) before ; we cast our eyes upon the longer leg of the glass, on which was likewise pasted a list of paper carefully divided into inches and parts, and we observed, not without delight and satisfaction, that the quicksilver in that longer part of the tube was 29 inches higher than the other.
Page 105 - The pressure is the same at all points in a horizontal plane of a liquid at rest under gravity.
Page 340 - ... to counterbalance and resist the pressure of a mercurial cylinder of about 29 inches, as we are taught by the Torricellian experiment ; so here the same air being brought to a degree of density about twice as great as that it had before, obtains a spring twice as strong as formerly. As may appear by its being able to sustain or resist a cylinder of 29 inches in the longer tube, together with the weight of the atmospherical cylinder that leaned upon those 29 inches of mercury ; and, as we just...
Page 341 - ... so long, that the cylinder, whereof the shorter leg of it consisted, admitted a list of paper, which had before been divided into 12 inches and their quarters, and the longer leg admitted another list of paper of divers feet in length, and divided after the same manner. Then quicksilver being poured in to fill up the bended part of the glass, that the surface of it in either leg might rest in the same horizontal line...
Page 340 - ... which tube, though of a pretty bigness, was so long, that the cylinder, whereof the shorter leg of it consisted, admitted a list of paper, which had before been divided into 12 inches and their quarters, and the longer leg admitted another list of paper of divers feet in length, and divided after the same manner.
Page 210 - The ratio between the amount of heat required to raise the temperature of any body one degree and that required to raise the temperature of an equal mass of water one degree, is known as the specific heat of the body.
Page 341 - The number of equal spaces in the shorter leg that contained the same parcel of air diversely extended. B. The height of the mercurial cylinder in the longer leg that compressed the air into those dimensions.
Page 342 - We then tried likewise, whether heat would, notwithstanding so forcible a compressure, dilate it; and approaching the flame of a candle to that part where the air was pent up, the heat had a more sensible operation than the cold had before; so that we scarce doubted, but that the expansion of the air would, notwithstanding the weight that opprest it, have been made conspicuous, if the fear of unseasonably breaking the glass had not kept us from increasing the heat.
Page 340 - For this being considered, it will appear to agree rarely-well with the hypothesis, that as according to it the air in that degree of density and correspondent measure of resistance, to which the weight of the incumbent atmosphere had brought it, was able to counter-balance and resist the pressure of a mercurial cylinder of about 29 inches, as we...