[NM023075], Technical Note, Arthur Edwin Kennelly, Theodore Lehmann, January 21st, 1889
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Title
[NM023075], Technical Note, Arthur Edwin Kennelly, Theodore Lehmann, January 21st, 1889
Editor's Notes
Meter Test. Following comparison made between a special meter of the Standardizing Bureau and our two standards. This special meter was designed to have a constant of 4 and of 8 on its two sides respectively. Passed the 35 ampere current in the lamp test room through it in series with the two standards in multiple. The soluiton used had been boiled afreshy by Lehamann & its acidity was 5-10 drops. The deinsity was 1.054 and it contained no appreciable amount of impurity. The zincs were all of plnae, rolled material previously used but amalgamated hot. It was subseqently found that some of this amalgam of a thick past consistency had remained in the holes in spite of the ordinary precautions and the error of loss was perhaps due to the fact that some of this amalgam was found on the connecting scres. [Table follows] Owing to the existence of this discrepancy, the plates were regalvanated hot and the test repeated.
Date
1889-01-21
Type
Folder/Volume ID
NM023-F
Microfilm ID
104:331
Document ID
NM023075
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University