Thermal conductivity of Acheson graphite is reported for the temperature range −150°C to +700°C. Cylindrical blocks of the material were placed above and below a flat electric heater and lateral losses balanced out by auxiliary coils wound on the surface of the sample. The results show a continual decrease in thermal conductivity with temperature over the entire range. The law, k/aC=A/T+B, proposed by Bidwell for certain other materials is found to hold accurately for graphite.

1.
Bidwell
,
Phys. Rev.
32
,
311
–
314
(
1928
).
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2.
Acheson Electrodes. The Nature and Properties. A pamphlet issued by the Acheson Graphite Company.
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© 1933 American Institute of Physics.
1933
American Institute of Physics
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