A College Text-book of PhysicsH. Holt, 1911 - 692 pages |
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Page 8
... means of clocks , which are machines constructed to run with great uniformity , one solar day may be compared with ... mean solar day . The ordinary standard time used in everyday life is mean solar time . The unit of time in the ...
... means of clocks , which are machines constructed to run with great uniformity , one solar day may be compared with ... mean solar day . The ordinary standard time used in everyday life is mean solar time . The unit of time in the ...
Page 18
... means of the paper , for there is friction between the two and it requires a certain force to slip the one over the other . If , therefore , we do not attempt to give motion to the weight tco rapidly , the friction will move the weight ...
... means of the paper , for there is friction between the two and it requires a certain force to slip the one over the other . If , therefore , we do not attempt to give motion to the weight tco rapidly , the friction will move the weight ...
Page 48
... Means of Diminishing Friction . To make friction small the surfaces should be very hard and of fine even polish . Where there is much wear it is customary to make one of the bearing surfaces of a harder material than the other . Thus ...
... Means of Diminishing Friction . To make friction small the surfaces should be very hard and of fine even polish . Where there is much wear it is customary to make one of the bearing surfaces of a harder material than the other . Thus ...
Page 55
... means of a lever arm 2 ft . long will raise what weight , if the screw has 3 threads to the inch , neglecting friction ? 5. Find the tension on a bicycle chain when the pedal is pressed down with a force of 100 lbs . , the crank arm ...
... means of a lever arm 2 ft . long will raise what weight , if the screw has 3 threads to the inch , neglecting friction ? 5. Find the tension on a bicycle chain when the pedal is pressed down with a force of 100 lbs . , the crank arm ...
Page 58
... mean of the initial and final velocities , or The space traversed in time t may therefore be expressed by the formula 2 Substituting for v its value we find v + u S -t . 2 v = uat , s = ut + } at2 . But equation ( 1 ) may be put in the ...
... mean of the initial and final velocities , or The space traversed in time t may therefore be expressed by the formula 2 Substituting for v its value we find v + u S -t . 2 v = uat , s = ut + } at2 . But equation ( 1 ) may be put in the ...
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Common terms and phrases
acceleration alternating current amount ampères angular armature axis ball beam body Boyle's law bulb calorimeter carbon cause cell centimeter circuit coil color condenser conductor connected constant copper cord crystal curve density diagram difference of potential direction disc discharge displacement distance dynes earth electric electrode electromotive force electroscope energy equal equilibrium flow focal length friction galvanometer gases glass gram heat induction iron J. J. Thomson lens Leyden jar light lines of force liquid magnetic field mass measured mercury metal mirror molecules moment of inertia motion moving needle negative number of lines parallel particles pass pipe placed plane plate polarized pole positive charge pressure prism radiation rays reflected refracted resistance right angles rotation shown in figure side sound spectrum substance surface temperature tones tube vapor velocity vessel vibration volts volume wave length weight wire zinc
Popular passages
Page 275 - 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 in which heat was excited and communicated in these experiments except it be motion.
Page 574 - When a ray of light passes from one medium to another, it is refracted so that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is equal to the ratio of the velocities in the two media.
Page 103 - The squares of the periodic times of the planets are proportional to the cubes of their mean distances from the Sun.
Page 118 - Archimedes stated that a body immersed in a fluid is buoyed up by a force equal to the weight of the displaced fluid.
Page 165 - We conclude that equal volumes of different gases at the same temperature and pressure contain equal numbers of molecules.
Page 7 - The straight line or distance between the centres of the transverse lines in the two gold plugs in the bronze bar deposited in the Office of the Exchequer...
Page 272 - Hypothesis states that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules.
Page 22 - Change of momentum is proportional to the force and to the time during which it acts, and is in the same direction as the force; (3) To every action there is an equal and opposite reaction.
Page 32 - ... the perpendicular distance from the axis to the line of action of Axis FIG.
Page 179 - Kelvin has shown that if a drop of water were magnified to the size of the earth the molecules of water would be of a size intermediate between that of a cricket ball and of a marble.