Bond, A. Russell (Alexander Russell), 1876- · New York, The Century co. · leaf 303
SUBMARINES 241 out electrical help. Air is let into the cylinderat ordinary atmospheric pressure, or fifteenpounds per square inch. But it is compressedby the upward stroke of the piston to aboutfive hundred pounds per square inch. Whenair is compressed it develops heat and the sud-den high…
Inventions
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