What people are saying - Write a review
We haven't found any reviews in the usual places.
Other editions - View all
action adjusted amount angle aperture appears atmosphere ball beam becomes body boiling called cause centre colours common consequence consists course crystal dark determined direction distance double effect elasticity electric energy enter equal ether example expansion experiment fact fall feet focus former give given glass greater heat hence Illustrated incident increase indicated intensity iron kind known latter length lens light lines liquid luminous means mercury metallic method mirror motion move musical natural object observed obtained opposite ordinary parallel particles passes plane plate polarised position pressure principle produced quantity radiation raise rays reach reflected reflexion refraction represented rise screen seen side solid sound spectrum substance suppose surface takes place temperature theory tion tones tube vapour velocity vessel vibration waves whilst whole
Page 234 - ... conditions. He also showed that the same coefficient of proportionality between work and heat applied when the conversion was effected by means other than friction. His final result, obtained by friction of water (Phil. Trans., 1850), was that 772-5 foot-pounds of work at Manchester were equivalent to the quantity of heat required to raise one pound of water 1° F.
Page 67 - ... the resonant cavity of the mouth, which can so alter its shape as to resound, at will, either to the fundamental tone of the vocal chords or to any of their overtones. Through the agency of the mouth we can mix together the fundamental tone and the overtones of the voice in different proportions. Different vowel sounds are due to different admixtures of this kind.