le the outer shield, which of course does not reach so high atemperature, was filled with powdered shnmk magnesia. Afterthis arrangement had been used for some time it was found thatthe outer shield was badly cracked, apparently as the result ofthe expansion of the magnesia. A glass window, H, was… … Fig. 1 298 Bulletin of the Bureau of Standards [Vol. 10 rosin and beeswax. To keep this material cool an additionalwater jacket, I, was applied. A small improvement in the upper copper clamp, J, connectingthe heater with one of the copper tubes carrying the electric cur-rent and the cooling water,…
Freezing, melting and boiling points · Materials properties · Heat flow, thermal and thermodynamic processes
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