Essentials of Physics for High and Private Schools |
Common terms and phrases
acceleration alternating current amperes angle apparatus applied Archimedes armature automobile barometer body Boyle's Law called calorimeter cell center of gravity Centigrade circuit coil column compression condenser convex lens copper cubic centimeters cubic foot cylinder density diagram diameter diatonic scale direct current direction distance earth electric energy equal expansion experiment Fahrenheit feet a second feet long Find flow foot-pounds fork frequency friction gases glass grams hydrometer Illustrative Problem inches increase iron lamp large piston latent heat lens lever light lines of force liquid machine magnet mechanical advantage mercury metal meters mirror molecules motion moving ohms parallel passes pipe placed plane plate pole pounds pulley rays represented in Figure resistance scale shown in Figure sound specific gravity steam substance surface temperature tone total force tube unit valve vapor velocity vibration voltage volume wave length weight wheel wire
Popular passages
Page 5 - The square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.
Page 184 - Every body continues in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed upon it.
Page 365 - 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 256 - 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 the Heat was excited and communicated in these experiments, except it be MOTION.
Page 51 - Specific gravity. The ratio of the weight of a body to the weight of an equal volume of water at some standard temperature.
Page 184 - The change of motion is proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.
Page 15 - 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 529 - ... which becomes insensible to the thermometer, or latent ; and, conversely, when steam is condensed into water, it gives out 1000° of latent heat, which thus becomes free, and affects both the thermometer and the senses. Hence steam of 212° Fahr. will, in condensing, heat five and a half times its own weight of water from the freezing to the boiling point.
Page 62 - The specific gravity of a body is the ratio of the weight of the body to the weight of an equal volume of some other body taken as the standard of comparison, and whose specific gravity, therefore, is taken as the unit.
Page 344 - It is also the ratio of the sine of the angle of incidence to the sine of the angle of refraction. In general, the index of refraction for any substance varies with the wave length of the refracted light.