350 Mr. C. Barus on the Change of the Order of Absolute 





Table VII. — Absolute Viscosity of Steel, annealed at 450°. 

 Wire No. 15. Twisted indefinitely. 



1 = 13-6 centim. ; p = *0405 centim. ; P = 82x981 dynes; 

 \.= 9*43 centim. 



r. 

 2$. 



Time. 



NxlO 2 . 



20X1O 6 . ' Time. 



2C t X 10 9 . 



nt xio 15 . 













Radians 





Radians. 



Sec. 



Centim. 



Radians 

 per centim. 



Sec. 



per centim. 

 per sec. 



glcs. 



•12 







Twisted. 













-•002 



240 











500 



177 



508 





720 



51 



94 



1000 



69 



1300 





1200 



71 



131 



1500 



40 



2250 





1860 



86 



158 



i 2000 



32 



2810 





2520 



95 



175 



i 2500 



25 



3600 





2000 



101 



186 



3000 



20 



4500 



No. 15. Tempered at 450°. Next Twist. 



-•12 







Twisted. 













•003 



240 











500 



111 



811 





600 



26 



48 



1000 



46 



1950 





1200 



43 



80 



1500 



40 



2250 





1740 



54 



100 



2000 



34 



2650 





2580 



68 



125 



2500 



31 



2910 





3240 



81 



149 



3000 



30 



3000 





No. 15. Tempered at 450°. Next Twist 





•12 







Twisted. 













-•003 



240 











500 



180 



500 





660 



48 



88 



1000 



82 



1100 





1260 



78 



143 



1500 



57 



1570 





1740 



92 



169 



2000 



48 



1870 





2520 



112 



206 



2500 



45 



2000 





3120 



126 



232 



3000 



42 



2140 



Some irregnlarities are apparent, largely introduced by 

 vibrations against which our laboratory facilities afford no 

 adequate protection. Vibrations increase the rate of twist 



