26o 



TABLE 268. 

 PELTIER EFFECT, 



The coefficient of Peltier effect may be calculated from the con- 

 stants A and B of Table 255, as there shown. Experimental re- 

 sults, expressed in slightly different units, are here given. The 

 figures are for the heat production at a junction of copper and the 

 metal named, in calories per ampere-hour. The current flowing 

 from copper to the metal named, a positive sign indicates a warm- 

 ing of the junction. The temperature not being stated by either 

 author, and Le Roux not giving the algebraic signs, these results 

 are not of great value. 



" Wied. Ann." vol. 34, p. 767. 



t " Ann. de Chim. et de Phys." (4) vol. 10, p, aoi. 



j Becquerel's antimony is 806 parts Sb+4o6 parts Zn+zai parts Bi. 



Becquerel's bismuth is 10 parts Bi-f- 1 part Sb. 



SMITHSONIAN TABLES. 



