1. |
THERMAL CONDUCTIVITY OF INSULATING MATERIALS |
|
Canadian Journal of Research,
Volume 17a,
Issue 11,
1939,
Page 209-215
E. A. Allcut,
F. G. Ewens,
Preview
|
PDF (589KB)
|
|
摘要:
The physical significance of "thermal conductivity" is well known, but this term has been applied commercially to a combination of conduction, convection, and radiation, which combination may vary considerably in a single material. Experimental evidence is advanced to indicate the undesirability of using this method of comparing the relative usefulness of different insulating materials.
ISSN:1923-4287
DOI:10.1139/cjr39a-019
出版商:NRC Research Press
年代:1939
数据来源: NRC
|
2. |
DESCRIPTION OF A PRESSURE CELL FOR THE MEASUREMENT OF EARTH PRESSURE |
|
Canadian Journal of Research,
Volume 17a,
Issue 11,
1939,
Page 216-220
I. F. Morrison,
W. E. Cornish,
Preview
|
PDF (252KB)
|
|
摘要:
The vibrating wire method for measuring strains is used to determine the pressure applied to an earth pressure cell. The construction of the cell, the principle on which it acts, and electrical circuits are described.
ISSN:1923-4287
DOI:10.1139/cjr39a-020
出版商:NRC Research Press
年代:1939
数据来源: NRC
|