Smithsonian miscellaneous collections . l65°°l6 308 603 897 11751451 308 29S 278 276264I7I52581973 252 22252471 ? e 2452716 , 240 2956 236 39N3434267 2293655 for 100 to 76°28 73%6 706 25681 658 23 636 22,J 22614 T 20594 575 l8557 l8539 I7S»175°5l6489 295 577 85511211386164418932»3523762614284830803310 29S 4t° for 100 TO C° 10 8 6 4 68 * - 6 ,1 - 8 J —10 75 —12 7<) 78 -14-16 -;,, — 18 — 20 Si 84 ^s -24 -26 86 -28 HX -30 76%4 7362S711 688 23 66721 646 2I 626 20 606 2° SKI568 o ,, 261261 508 247 752 244J 242


Smithsonian miscellaneous collections . l65°°l6 308 603 897 11751451 308 29S 278 276264I7I52581973 252 22252471 ? e 2452716 , 240 2956 236 39N3434267 2293655 for 100 to 76°28 73%6 706 25681 658 23 636 22,J 22614 T 20594 575 l8557 l8539 I7S»175°5l6489 295 577 85511211386164418932»3523762614284830803310 29S 4t° for 100 TO C° 10 8 6 4 68 * - 6 ,1 - 8 J —10 75 —12 7<) 78 -14-16 -;,, — 18 — 20 Si 84 ^s -24 -26 86 -28 HX -30 76%4 7362S711 688 23 66721 646 2I 626 20 606 2° SKI568 o ,, 261261 508 247 752 244J 242 994 2361230 1465 235 1696 231 229 r925 c 7 J 2l5 2140 760 735711689668647627607 25 252501736970120414321659 ;5 j249235234234228227227 760 736 2413 23713 J 22691 670 6*92i628 609 I9 240476711 943117414001620 •26 ?28-30 7607377H692 229 453675 760 736 713 230 457 760736 228 228 -18 -4?26?28-30. ADIABATIC DIAGRAM (W lOff). XXII THE RELATION BETWEEN POTENTIAL TEMPERA-TURE AND ENTROPY1 BY L. A. BAUER[Reprinted from the Physical Review, Vol. XXVI, A?o. 2, February, igoS] 111 1888 the late Professor von Helmholtz incidentally introducedthe term waermegehalt in connection with his investigation,2wOn Atmospheric Motions. According to him the waermege-halt or the actual heat contained in a given mass of air is to bemeasured by the absolute temperature which the mass wouldassume if it were brought adiabatically to the normal or standardpressure. It remained for the late Professor von Bezold, however,to perceive the full significance of this term and to reveal its impor-tant bearing in the discussion of meteorological phenomena. As the quantity really involved in this new term is not a quantityof heat, von Bezold suggested that the term be replaced by the evi-dently more appropriate one of potential Thismet with von Helmholtzs approval. Wi


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Keywords: ., bookauthorsm, bookcentury1800, bookdecade1860, booksubjectscience