Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 247
227 INCANDESCENT RADIATORS. the bulb in a perfectly quiescent state. experimenting within a vacuum is not The following description will show the practicable. Evidently this can only be device which has been resorted to. effected by keeping the air surrounding … Fig. 1 represents a vertical section through which a stream of cold water is of a conical vessel, the bottom of which passed during experiments, surrounds the is semispherical, the top being open and conical vessel, the recording thermometer provided with a wide flange. A broad being inserted near…
Engineering
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