[OOKBK A m'kekgow] THERMAL CHANGE TO TENSION 



23 



It seems therefore that thermal changes, such as take place with 

 suddenly applied loads, are far too rapid to be detected by an ordinary 

 thermo-pile, only the mean integral effect being registered, and there- 



0-rte 



o/y/s/o/y » /n/roi/re. 



fore such a method of measurement requires considerable improvement 

 to become applicable for the determination of the effects of stress in 

 bridges and machines subjected to rapidly varying loads 



