 | John Johnston - Physics - 1854 - 420 pages
...— Sound is conveyed from the vibrating body to the ear by means of vibrations in the air, as 7f£kg already stated ; hence, if a bell is placed under...the density of the air in the receiver increases. The figure in the margin represents an apparatus which is used for this purpose. It consists of a glass... | |
 | William Somerville Orr - Science - 1856 - 556 pages
...212", and occupy the vacant space in the vessel containing it. Thus, when a saucer containing water is placed under the receiver of an air-pump, as the air is extracted from the receiver, vapour rises from the water ; and however low may be the temperature of... | |
 | William Somerville Orr - Science - 1860 - 540 pages
...212°, and occupy the vacant space in the vessel containing it. Thus, when a saucer containing water is placed under the receiver of an air-pump, as the air is extracted from the receiver, vapour rises from the water ; and however low may be the temperature of... | |
 | Samuel Escue Tillman - Heat - 1889 - 174 pages
...STATE. FIG. 27. LESLIE'S EXPERIMENT. Fio. 28. vessel containing strong sulphuric acid, the whole being placed under the receiver of an air-pump. As the air is exhausted the 'water evaporates more and more rapidly, the vapor of water being absorbed by the sulphuric acid,... | |
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... is placed under the receiver of an air-pump, as the air is exhausted its sound becomes less and less distinct, until it can scarcely be heard. 