High frequency apparatus, design, construction and practical application; a practical treatise for electrical engineers, electricans, physicians, students and experimenters (1920)
Curtis, Thomas Stanley · New York, Norman W. Henley publishing company · leaf 166
temperature of the wire above thatof the surrounding atmosphere, the greater the loss of heatby radiation, and hence the greater ,the inaccuracy of thearea of the wire must be determined by the current anduse for which the instrument is intended. It is best toinstrument. Therefore, the material and… … Fig. 82.—Meter with cover removed as soon as it reaches the extent of its travel. To offset thispronounced advantage, the instrument is slow to record.The hot wire element takes a certain amount of time toassume its final temperature and degree of expansion andthe pointer moves slowly over the…
Electric apparatus and appliances
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