Tables 266 {,conitnued)-2Q7 , 

 THERMOELECTRIC POWER. 



TABLE 266. — Thermoelectilo Power {continued). 



259 



Substance. 



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 : 



85%Pt+iS%Ir . . 



90%Pt+io%Ir . . 



95%l^t+s%Ir . . 



Selenium 



Silver 



" (pure hard) . . . 



" wire 



Steel 



Tellurium 



Tin (commercial) . . . 



II 



Zinc 



" pure pressed . . . 



6.18 



—2.57 

 0.60 



—7.90 

 —5.90 

 —6.15 



— 11.27 



0.43 



0-0355 



0.0074 

 0.0109 



— 0.0062 



0.0133 



—0.0055 



— 0.0147 



0.0325 



-0.0055 

 -0.0238 



6.9 



—29.9 



—0.9 



—2.42 



8.82 



—8.03 



—5-63 

 —6.26 

 —807. 

 — 2.4T 

 —3.00 



— 10.62 

 —502. 



— 0.1 



0-33 

 —2.79 



—3-7 



7.96 

 6.9 



— 2.20 



1-15 



—0.94 

 2.14 



—8.21 



-6.42 



—2.86 



—2.18 

 —9.65 



-429-3 

 — 0-33 



0.16 

 —3-51 



-174 



347 



—55 



-1274] 



444 

 1118] 



[- 



-144 

 347 



7'8 



T 

 B 

 M 



T 



(( 



B 



M 

 T 

 M 

 B 

 T 

 M 

 B 



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. 



TABLE 267.— TbermoelectrlG Power against Platinum. 



One junction is supposed to be at 0° C ; -f indicates that the current flows from the 0° junction 

 into the platinum. The rhodium and iridium were rolled, the other metals drawn.* 



Smithsonian Tables. 



* Holbom and Day. 



