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Show which depart somewhat from those calculated by H. G. MUller [ 4] with rw and adopted by R. Geiger [ 2] . In the general case 0+ B = 0, Equation ( 6) takes the place of ( 7) and also can be written in the latter form as follows: Q + B 0,623rg 0,623 rE „ r & L H tL = fro H EQ XL ( 8) pep pep In the graph with i^+( Q+ B]/( Xj_ as abscissa and eL as ordinate, a straight line divides the two domains for melting and non- melting surfaces. In Fig. 1, IS to I x" x X/^ V Condensation and Xx/ V' Freezing * \ N N - *. ^^. X N ' -^ Hoar Frost ^> v " V. " t. Si x. Formation \, "_ « » ^ V K ^ ^ \ Sublimi \ ^ i\ ^ i i Condensation and Melting ^ v Evaporation ition N. and Melting - JO • 20 10 0 10 20 Fig. 1. $• as a function of 1/ + ( Q + B;/( XL and e, for p = 760 torr, as well as the five domains for the different processes at the surface. calculated for p = 760 torr, this is the line ( designated 0) running from upper left to lower right and intersecting the abscissa at 10.6° C. The domain for a |