The book Evolution of the Electric Incandescent Lamp was written by author Frank L Franklin Leonard Pope Here you can read free online of Evolution of the Electric Incandescent Lamp book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Evolution of the Electric Incandescent Lamp a good or bad book?
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244. 28 Description of Crooked Radiometer. termed tlie radiometer, which may be briefly described as a small revolving wheel provided with vanes or paddles of mica, poised upon a delicate pivot within a highly exhausted and hermetically sealed glass bulb. Mr. Crookes showed that a paddle-wheel so constructed could be maintained in contin- uous revolution by the mechanical force of light alone. In an account of some of his experiments, published in London Engineering, April 19th, 1878, a descrip...tion and illustration of one of these radiometers is iven as follows : One of the instruments employed is that shown in Fig. (>, in which is suspended in the ordinary way upon a needle point a four-armed radiometer, carrying rectangular vanes of clear mica, b b, set on an angle with the horizontal arms like the vanes of a smoke- jack. A short dis- tance below this fly is fixed in a horizontal plane a circular loop of platinum wire, c c, the two ends of which pass through the bulb, being hermetically nettled into the gbm, and finish in the terminals -j- and, by which the platinum ring can be placed in circuit with a voltaic battery, and thm rendered incandes- cent.
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