File:The panorama of science and art (1823) (14597433318).jpg

Identifier: panoramaofscienc02smit (find matches)
Title: The panorama of science and art
Year: 1823 (1820s)
Authors: Smith, James, 1759-1828?
Subjects: Technology Technology
Publisher: London : Caxton Press
Contributing Library: NCSU Libraries
Digitizing Sponsor: NCSU Libraries

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to impel a single bullet, the remainderbeing reserved for the repetition of the experiment. Pnenmatkal Experiments hy Condensation. A great variety of experiments may be performed by con-densation, to a few of which we shall advert. 1. The sound of a bell, or any other noise, is much louderin condensed than in common air. 2. If a square phial be selected, which is found to bear thepressure of the common atmosphere, when exhausted of air;it may be broken by condensing the air round it. 3. A fountain may be made by condensed as well as byrarefied air. For this purpose, procure a strong copper vessel,as represented by fi^. 11, having a tube thatscrews into itsneck, so as to be air-tight, and long enough to reach nearly to the bottom. Having poured a quantity of water into the ves-sel, but not enough to fill it, and screwed in the tube, adaptit to a condensing syringe, and condense the air in the vessel;shut the stop-cock, and unscrew the syringe, then, on opening iil>iiKil7aiLtOI€^,
Text Appearing After Image:
^npraved b^ Ja. * Davis. Fobliahed. bvHenry THsher. Caitari.Xoiidaix,i822. PNEUMATICS. 25 Fire produced by condensation.—Barometer. the stop-cock, the air acting upon the water in the vessel, willforce it out into a jet of considerable height. Variety may begiven to the experiment, by screwing alternately upon thetube pieces which contain minute apertures differently dis-posed. 4. Fig. 10, represents an instrument nearly like the con-densing syringe, but it has no hole in the upper part, nor anyvalve at the bottom. It has a solid piston, and the handle Gis a globe. This instrument answers the purpose of a tinder-box; for, upon striking the handle G with palm of the hand,the air below the piston is condensed, and the act of condens-ing air always eliciting caloric, the quantity is in this instancesufficient to light a piece of tinder fastened by a little hook to the bottom of the piston, and therefore by drawing out thepiston, immediately after the stroke, a match may be lightedin the

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