PhysicsScott, Foresman and Company, 1910 - 414 pagine |
Altre edizioni - Visualizza tutto
Parole e frasi comuni
ammeter amperes armature battery beam body called center of gravity centimeter charged circuit coil colors condenser convex lens copper cubic cubic foot current flows cylinder direction distance dry cell efficiency electric current electromotive force engine equal feet fluid focal length focus foot foot-pounds frequency friction galvanometer given glass gram-calories grams gravity cell greater heat Hence horsepower inclined plane increases iron kinetic energy kite lamp lens angle lever lifted light lines of force liquid loop machine magnet mass measured mechanical advantage mercury metal mirror motion motor moving object particles passes pipe piston placed plate pole pounds per square pounds-force pressure problem produced pull pulley pump push rays reflected resistance rises rotating screen speed square inch steam string surface temperature tube velocity vertical vibrations visual angle voltmeter volts volume water vapor watts waves weight wheel wire
Brani popolari
Pagina 24 - Every body continues in its state of rest or of uniform motion in a straight line, except in so far as it may be compelled by impressed forces to change that state.
Pagina 63 - To every action there is always an equal and contrary reaction ; or the mutual actions of any two bodies are always equal and oppositely directed.
Pagina 25 - ... is directly proportional to the product of the masses and inversely proportional to the square of the distance between them.
Pagina 90 - The loss of weight of a body immersed in a fluid is equal to the weight of the displaced fluid, or a body immersed in a fluid is buoyed up by a force equal to the weight of the fluid displaced by it.
Pagina 82 - We took then a long glass tube which by a dexterous hand and the help of a lamp was in such a manner crooked at the bottom that the part turned up was almost parallel to the rest of the tube...
Pagina 276 - Why the image is seen as far behind the mirror as the object is in front of it.— Let AB be an arrow held Fig.
Pagina 177 - If now, we look along the wire in the direction in which the current is flowing, the magnetic field is whirling around the wire in the direction we would turn down a right-hand screw.
Pagina 90 - ... water-containing fluids are used where fire resistance is needed. See fire-resistant fluids. hydraulic system — system designed to transmit power through a liquid medium, permitting multiplication of force in accordance with Pascal's law, which states that "a pressure exerted on a confined liquid is transmitted undiminished in all directions and acts with equal force on all equal areas.