# Household Physics

Allyn & Bacon, 1919 - Physics - 304 pages

### Contents

 II 29 III 41 SOURCES OF HEAT 60 SOUND 74 BASIS FOR MUSIC 85 LIGHT 91 COLOR 132 ELECTRICITY 153
 HEATING EFFECT OF AN ELECTRIC CURRENT 173 XVII 184 INDUCTION 200 MACHINES 233 DYNAMICS 248 MECHANICS OF FLUIDS 259 Appendix 285 Index 297

### Popular passages

Page 246 - 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 292 - Weight 10 milli-grams = 1 centi-gram. 10 centi-grams = 1 deci-gram. 10 deci-grams = 1 gram. 10 grams = 1 deka-gram. 10 deka-grams = 1 hecto-gram. 10 hecto-grams = 1 kilo-gram.
Page 246 - The rate of change of momentum is proportional to the impressed force, and takes place in the direction in which the force acts.
Page 25 - Specific Heat. The specific heat of a substance is the ratio of the heat required to raise the temperature of unit weight of the substance 1 deg.
Page 275 - ... where it intersects the axis is called the metacenter. If the metacenter is above the center of gravity, the body is in stable equilibrium, and tends to return to the original position when the external force is removed. Weight of Submerged Body. — A body submerged in water or other fluid will lose in weight an amount equal to the weight of the fluid displaced by the body. This is known as the principle of Archimedes. To illustrate, suppose the upper surface of a 10-inch cube is 20 inches below...
Page 103 - The angle of incidence is equal to the angle of reflection. (The angle of incidence is the angle between the incident ray and the normal; the angle of reflection is the angle between the reflected ray and the normal.) In Fig.
Page 163 - Rule for a coil has this in common with the Thumb Rule for a straight wire: The fingers are wrapped around the coil in the direction of the currents around the coil. In this case they are electric currents. Similarly the fingers are wrapped around the...
Page 8 - A calorie is the amount of heat required to raise the temperature of 1 gram of water 1° C. A British thermal unit (abbreviated Btu) is the quantity of heat required to raise the temperature of 1 pound of water 1° F.
Page 8 - The gram calorie, or small calorie (cal.), is the amount of heat required to raise the temperature of 1 gram of water 1°...
Page 289 - Measure. — 12 inches = 1 foot; 3 feet = 1 yard; 5i yards = 1 rod or pole; 40 rods = 1 furlong; 8 furlongs = 1 statute mile (1760 yards or 5280 feet); 3 miles = 1 league.