File:The Philosophical magazine; a journal of theoretical, experimental and applied physics (1798) (14591390098).jpg

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Identifier: s4philosophicalm40lond (find matches)
Title: The Philosophical magazine; a journal of theoretical, experimental and applied physics
Year: 1798 (1790s)
Authors:
Subjects: Physics
Publisher: London Taylor & Francis (etc.)
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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n of solid or liquid bodies. These con-stants only apply within the limits for which they have beenascertained by experiment, and altogether lose their significancewhen applied far beyond these limits. Upon this assumption I consider the eruptive protuberancesas a phenomenon of the issue of a gas from one space to another,in such a way that the pressure during the issue in both spacesis supposed to be constant, and so that no absorption or evolu-tion of heat occurs. Let A signify the heat-equivalent of the unit of work; V the initial velocity of the gas in the plane of the outlet; ff the intensity of gravity on the sun; K the relation of the specific heat of the gas with constant pressure and constant volume ;c the specific heat of the gas with constant volume reduced to an equal weight of water;it the absolute temperature of the gas in the interior spacewhence the gas issues; FU.MLq.S.4;Vob40.Fl Fof/ns of F.riqitwn.s Sc- ClMid like promiiuivccsas cbMTVid uiui i/ranti In Ilvt /.vUner:
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Courier CI.IV& l. Lllli LtwHon Onyrii/iJimi/ Mih: I, • // /V II l..OOO III, I ItKsiUvn IliCTuf,^ IC22 /sen .lii,,ii-i I.f Turn njr Physical Constitution of the Sun. 315 ta the absolute temperature of the issuing gas in the plane of the outlet;/?i the pressure of the gas in the interior; Pa the pressure in the plane of the outlet.According to the mechanical theory of heat, and upon theabove-mentioned hypotheses, the following relation holds goodbetween these nine quantities*:— ^^g=<ti-ta), (1) Further, let Cj signify the mean height of the barometer in metres of mercury;p the density of the gas under consideration at the tempe-rature of melting ice, and under the pressure of thecolumn o, on the eartVs surface;(Tthe density of the gas in the interior space under the pressure^;; and at the absolute temperature ti)a the coefficient of expansion of the gas for 1° C.According to Mariotte and Gay-Lussacs law we have, there-fore, the following relation, o-=A.^ (3) a,u t. ^ The pre

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  • bookid:s4philosophicalm40lond
  • bookyear:1798
  • bookdecade:1790
  • bookcentury:1700
  • booksubject:Physics
  • bookpublisher:London_Taylor___Francis__etc__
  • bookcontributor:Gerstein___University_of_Toronto
  • booksponsor:University_of_Toronto
  • bookleafnumber:328
  • bookcollection:gerstein
  • bookcollection:toronto
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29 July 2014



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