Telephone without a diaphragm
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Article
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1878
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Elsevier Science
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English
β 59 KB
Heating Wheel Tires. 285 Heating Wheel Tires.--In the workshops of the railway from Moscow to Nijni, the wheel-tires are plunged, by the help of a movable cran% into a metallic reservoir filled with water, which is kept boiling by the admission of steam from a neighboring boiler. After ten minutes