Tables 298 ('^<"«'"'«''^)-299. — THERMOELECTRIC POWER. 269 



TABLE 298. — Thermoelectric Power {continued). 



Substaoce. 



A 

 Microvolts, 



B 

 Microvolts. 



Thermoelectric power 



at mean temp of 

 junctions (microvolts). 



20° C. 



50° C. 



Neutral 

 point 

 _A 

 B' 



Author- 

 ity. 



Palladium 



Phosphorus (red) . . . 



Platinum 



" (hardened) . . 



" (malleable) . . 



" wire .... 



" another specimen 



Platinum-iridium alloys : 



8s%Pt+is%Ir . . 



90%Pt+io%Ir . . 



95% 1^1+ 5% Ir . . 



Selenium 



Silver 



" (pure hard) . . . 



" wire 



Steel 



Tellurium 



Tellurium ;3 



" a 



Tin (commercial) . . . 



Zinc 



" pure pressed . . . 



6.18 



-2-57 

 0.60 



—7.90 



—5-90 

 -6.15 



— 11. 27 



0.43 

 —2.32 



0-0355 



0.0074 

 0.0109 



— 0.0062 



0-0133 



—0.005 s 



—0.0147 

 0.0325 



—0.0055 

 — 0.02 -jS 



6.9 



—29.9 



— 0.9 



—2.42 

 S.82 



—8.03 



-5-63 

 —6.26 

 -807. 

 — 2.41 

 —3.00 



— 10.62 



-Soj. 



-500. 

 -160. 



0.33 



—2.79 



—3-7 



7.96 

 6.9 



— 2.20 

 1. 15 



—0.94 

 2.14 



—8.21 



-5-23 

 -6.42 



—2.86 



—2.18 

 -9-65 



—429-3 



—0.33 



0.16 



—3-51 



-174 



347 

 —55 



[—1274] 



444 

 [-U.8] 



—144 



347 



78 

 -98 



T 

 B 



M 



T 

 B 



M 

 T 

 M 

 B 

 T 

 M 

 B 

 H 

 H 



M 

 T 



M 



B Ed. Becquerel. " Ann. de Chim. et de Phys." [4] vol. 8. 

 M Matthiesen, " Pogg. Ann." vol. 103, reduced by Fleming Jenkin. 

 T Tait, "Trans. R.'S. E." vol. 27, reduced by Mascart. 



B Haken, Ann. der Phys. 32, p. 291, 1910. (Electrical conductivity of Te/3=o.04, Teo 1.7 

 e. m. units.) 



TABLE 299. — Thermoelectric Power ol Alloys. 



Xhe thermoelectric powers of a number of alloys are given in this table, the authority being Ed. Becquerel. They are 

 relative to lead, and for a mean temperature of 50'^ C. In reducing the results from copper as.a reference metal, 

 the thermoelectric power of lead to copper was taken as — 1.9. 



Substance. 



806 



Antimony 



Cadmium 



Antimony 



Cadmium 



Zinc 



Antimony 



Cadmium 



Bismuth 



Antimony 



Zinc 



Antimony 



Zinc 



Bismuth 



Antimony 



Cadmium 



Lead 



Zinc 



Antimony 



Cadmium 



Zinc 



Tin 



Smithsonian Tables. 



Substance. 



Antimony 



Zinc 



Tin 



Antimony 

 Cadmium 

 Zinc 



Antimony 

 Tellurium 



Antimony 

 Bismuth 



Antimony 

 Iron 



Antimony 

 Magnesium 



Antimony 

 Lead 



Bismuth 



Bismuth 

 Antimony 



CD C 



33 



s-s-: 



2-5 



1.4 

 -0.4 



-43-8 

 -33-4 



Substance. 



Bismuth 

 Antimony 



Bismuth 

 Antimony 



Bismuth 

 Antimony 



Bismuth 

 Antimony 



Bismuth 

 Tin 



Bismuth 

 Selenium 



Bismuth 

 Zinc 



Bismuth 



Arsenic 



Bismuth 

 Bismuth sulphide 





-51.4 

 -63.2 



—68.2 



—66.9 

 60 

 —24-5 

 -31-1 



— 46.0 

 68. 1 



