. Carnegie Institution of Washington publication. UH IfiKE . fm. WASHINGTON, D. BY THE CARNEGIE INSTITUTION OF WASHINGTON 1912 CARNEGIE INSTITUTION OF WASHINGTONPUBLICATION NO. 167 7 ISAAC H. BLANCHARD COMPANYNEW YORK CONTENTS. Part I. Page Introduction 3 Detailed description of the bicycle ergometer 5 General considerations regarding method of use 7 Method of calibration 9 Part II. Calibration tests 11 The technique of a calibration experiment 12 Calibration tests of Ergometer I 14 Earlier calibration tests 14 Calibration tests of 1911 15 Friction tests with Ergometer I 21 Calibra
. Carnegie Institution of Washington publication. UH IfiKE . fm. WASHINGTON, D. BY THE CARNEGIE INSTITUTION OF WASHINGTON 1912 CARNEGIE INSTITUTION OF WASHINGTONPUBLICATION NO. 167 7 ISAAC H. BLANCHARD COMPANYNEW YORK CONTENTS. Part I. Page Introduction 3 Detailed description of the bicycle ergometer 5 General considerations regarding method of use 7 Method of calibration 9 Part II. Calibration tests 11 The technique of a calibration experiment 12 Calibration tests of Ergometer I 14 Earlier calibration tests 14 Calibration tests of 1911 15 Friction tests with Ergometer I 21 Calibration tests of Ergometer II 22 Friction tests with Ergometer II 29 Part III. The magnetic reactions produced by a copper disk rotating between the poles of a magnet 31 Measurement of magnetic field by means of a bismuth spiral 33 Comparison of results with theory 37 Further experiments with the eddy currents 39 Influence of temperature on the constancy of the bicycle ergometer 42 The design of electric brakes 42 ILLUSTRATIONS. PageFig. 1. Side and top views ofcarnegieinstitut167carn
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