Matter and Change: An Introduction to Physical and Chemical ScienceThe University Press, 1924 - 280 pages |
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acceleration acid aether alcohol apparatus atmosphere atomic number atomic weights benzene body boiling Boyle's law calculated called calorimeter carbon dioxide centimetre chemical chlorine coil compound condenser constant volume copper crystals cubic centimetre curve density displacement distance earth effect electric charge electromagnetic electromotive force electrons elements emit energy equal equation equilibrium experiment formula freezing point galvanometer gases gives glass gram Hence hydrogen hydrogen chloride increase ions iron known light lines liquid magnetic force mass measured mercury metals molecular molecules motion moving nebulae nitrogen observed orbit oscillations osmotic pressure oxide oxygen particles pass physical plane plate platinum poles potential prism proportional proteins quantity radiation radioactive radium rays reaction refracted resistance result salt shows sodium solid solution sound specific heat spectra spectrum stars substance surface temperature theory thermometer tube unit uranium vapour pressure velocity vibration wave length wire
Popular passages
Page 45 - Avogadro's law states that equal volumes of all gases at the same temperature and pressure contain the same number of molecules...
Page 25 - The mean solar day is divided into 24 hours, each hour into 60 minutes, and each minute into 60 seconds.
Page 107 - When the contact was made, there was a sudden and very slight effect at the galvanometer, and there was also a similar slight effect when the contact with the battery was broken. But whilst the voltaic current was continuing to pass through the one helix, no galvanometrical appearances nor any effect like induction upon the other helix could be perceived...
Page 107 - Two hundred and three feet of copper wire in one length were coiled round a large block of wood; other two hundred and three feet of similar wire were interposed as a spiral between the turns of the first coil and metallic contact everywhere prevented by twine. One of these helices was connected with a galvanometer and the other with a battery of one hundred pairs of plates four inches square, with double coppers, and well charged. When the contact was made there was a sudden and very slight effect...
Page 42 - The specific gravity is the ratio of the weight of a substance to the weight of an equal volume of water.
Page 4 - Newton's law of gravitation states that any two bodies attract each other with a force proportional to the product of their masses and inversely proportional to the square of the distance between them...
Page 46 - A glass tube closed at one end is filled with mercury, and then inverted over mercury in a trough.
Page 115 - Some velocity must be proportional to the reciprocal of the square root of the product of the dielectric constant and the magnetic permeability of an insulating medium.
Page 125 - If we have fewer equations, it possesses "freedom," and the number of "degrees of freedom" is measured by the excess of the number of variables over the number of equations.
Page 193 - ... of the resulting sound. It is first loud, then weak, loud and weak, etc., giving rise to what are called "beats," the number of beats per second being equal to the difference in the frequencies of the pipes. Thus, two pipes of frequencies 280 and 285 produce 5 beats per second. The explanation of the phenomenon lies in the superposition of the two resulting trains of waves; for, if the wave-number of one train exceeds that of the other by five, it will happen five times in...