Elements of Chemistry; Chemical Physics Volume 1

Elements of Chemistry; Chemical Physics Volume 1

By (author) 

List price: US$27.54

Currently unavailable

Add to wishlist

AbeBooks may have this title (opens in new window).

Try AbeBooks

Description

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1860 edition. Excerpt: ...heat of fluidity, as it is sometimes called, is again given out. Water, if undisturbed, may be cooled down in a narrow tube even 200 below the freezing point without congealing; but the least agitation causes a portion to solidify suddenly, and the latent heat emitted at the moment by the portion which freezes raises the temperature of the whole mass to 3 a0. Melted phosphorus, as well as acetic and sulphuric acids and several other substances, admits, like water, of being cooled down several degrees below its point of solidification, but if agitated, or if touched with a portion of its own substance in the solid form, it immediately solidifies with evolution of heat. A similar extrication of heat occurs when a supersaturated viscous liquid, and propounded what has been known as the viscous theory of glacier motion. Viscosity, however, is not a property which is exhibited by ice; and Tyndall (Phil. Trans., 1857) has shown that all the phenomena of glacier motion are accurately accounted for by this process of crushing, and subsequent regelation into solid transparent ice. APPLICATIONS OF STEAM BEAT. 243 solution of sulphate of soda (70) is made to crystallize suddenly by agitation, the mass becoming sensibly-warm to the hand. The solidification of metallic bodies is attended with a like evolution of heat: --a fluid alloy of sodium and potassium may be easily made by kneading the two metals together; with mercury they form a solid amalgam, and in the act of uniting with it they emit sufficient heat to set fire to the naphtha that may be adhering to their surfaces. (165) Disappearance of Heat during the Formation of Vapour.--In the change from the liquid to the gaseous state, the disappearance of heat is found to occur to an extent still greater..show more

Product details

  • Paperback | 190 pages
  • 189 x 246 x 10mm | 349g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236618068
  • 9781236618061