Proceedings of the American Academy of Arts and Sciences, Volumen2Metcalf and Company, 1852 Vol. 12 (from May 1876 to May 1877) includes: Researches in telephony / by A. Graham Bell. |
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Página 67
... Table I. " The following tables of results will sufficiently explain themselves . They exhibit quantities of lead which , for practical purposes , have little more than relative value in the columns in which they occur . " The ...
... Table I. " The following tables of results will sufficiently explain themselves . They exhibit quantities of lead which , for practical purposes , have little more than relative value in the columns in which they occur . " The ...
Página 68
... TABLE I. Residue . Loss upon being Ignited . Inorganic Matter . Insoluble after Ignition . gr . gr . gr . gr . Distilled water , 0.0000 0.0000 0.0000 0.0000 Albany 66 0.0924 0.0198 0.0726 Cambridge " 0.3918 0.0990 0.2928 0.0676 ...
... TABLE I. Residue . Loss upon being Ignited . Inorganic Matter . Insoluble after Ignition . gr . gr . gr . gr . Distilled water , 0.0000 0.0000 0.0000 0.0000 Albany 66 0.0924 0.0198 0.0726 Cambridge " 0.3918 0.0990 0.2928 0.0676 ...
Página 69
... TABLE III . Experiments with Two Bars of Lead . In all other respects the conditions were the same as in the foregoing exper- iments . Days . Cochituate . Croton . Fairmount . Jamaica . 11 12 1345678IRB 5.000 5.000 1.000 10.000 3.000 ...
... TABLE III . Experiments with Two Bars of Lead . In all other respects the conditions were the same as in the foregoing exper- iments . Days . Cochituate . Croton . Fairmount . Jamaica . 11 12 1345678IRB 5.000 5.000 1.000 10.000 3.000 ...
Página 70
... table . " TABLE V. Experiments with Bars suspended out of Contact with the containing Vessel . - Waters not exposed to sunlight . Av- erage results of four series of experiments . One bar to each tube . No concentration . Days ...
... table . " TABLE V. Experiments with Bars suspended out of Contact with the containing Vessel . - Waters not exposed to sunlight . Av- erage results of four series of experiments . One bar to each tube . No concentration . Days ...
Página 71
... TABLE VIII . — Experiments with Lead and Iron . Lead up- permost . Lead solder . Volume of water same as in previous exper- iments . Days . Distilled Water . Albany . Cambridge . Cochituate . Croton . Fairmount . Jamaica . Troy . 2 ...
... TABLE VIII . — Experiments with Lead and Iron . Lead up- permost . Lead solder . Volume of water same as in previous exper- iments . Days . Distilled Water . Albany . Cambridge . Cochituate . Croton . Fairmount . Jamaica . Troy . 2 ...
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