Applied Physics for Elementary CoursesLongmans, Green, and Company, 1912 - 199 pages |
Other editions - View all
Common terms and phrases
acceleration amperes angle applied armature battery belt body brake called carbon cell circuit coil condenser conductor connected constant convex lens copper cubic foot cylinder diameter direct current direction distance dynamo effective pull electro magnet energy engine equal ether feet per second field foot-pounds frequency friction glass gram horse-power lamp length lever lift light lines of force liquid load loop machine Mean effective pressure mechanical advantage mercury molecules motion motor move north pole Parallelogram of Forces pass pipe piston placed plate pounds per square pressure produce pulley pump quantity of heat refraction resistance result revolving shear shearing strength shown in Fig shunt soft iron sound south pole specific gravity speed square inch steam steel straight line strain stroke Suppose surface takes temperature tension tion transmitted tube unit valve velocity vibrations per second volts wave weight wire zinc
Popular passages
Page 107 - The boiling point of a liquid is the temperature at which its vapor pressure is equal to the pressure exerted on the liquid.
Page 22 - Newton's Three Laws of Motion," and are as follows: (1) All bodies continue in a state of rest, or of uniform motion in a straight line, unless acted upon by some external force that compels a change.
Page 31 - 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.
Page 151 - As a unit of resistance, the international ohm, which is based upon the ohm equal to 10" units of resistance of the CGS system of electromagnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grams in mass, of a constant cross-sectional area and of the length of 106.3 centimetres.
Page 130 - ... is proportional to the rate of change in the number of lines of force passing through it.
Page 85 - It may also be defined as the sine of the angle of incidence divided by the sine of the angle of refraction, as light passes from air into the substance.
Page 81 - An image of the candle will be seen in the tumbler of water, showing that the image is as far back of the mirror as the object is in front.
Page 104 - ... has the power of removing coloring matters from solutions, and is, therefore, used to some extent in laboratory practice. The actual specific gravity of wood charcoal is 1.5, but owing to its porosity it floats on the surface of water. Charles' Law. The volume of a perfect gas at constant pressure is proportional to its absolute temperature. This is known as the "law of Charles.
Page 1 - O because a molecule of water is made of two atoms of hydrogen and one atom of oxygen.
Page 135 - If the wire is grasped in the right hand with the thumb in the direction of the current, the fingers will wrap (or curl) in the direction of B.