βWorkability indexβ of fireclay refracto
π
Article
π
1947
π
Elsevier Science
π
English
β 141 KB
NATIONAL I~UREAU OF STANDARDS NOTES. ' 3II movement of this diaphragm causes fluctuations in the output of the pick-up coil. The action is similar to that of the device used as a phonograph pick-up. With a slight modification, the device may be used as a thermometer. A strip of bi-metal of convenie