Waveforms : a history of early oscillography
著者
書誌事項
Waveforms : a history of early oscillography
IOP, 1987
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注記
Includes bibliography and index
内容説明・目次
内容説明
The cathode ray oscilloscope is an instrument for the measurement of variation of electric voltage and current. It has taken 90 years to reach its present level of sophistication. Such has been the cathode ray tube's success that many scientists and engineers are largely unaware of the earlier methods which preceded it. In this book, Phillips recalls the early methods of the examination of electrical waveforms, illustrating the ingenuity and persistence which was brought to bear on the problem andlooks at some of the apparatus - sometimes crude, but often quite sophisticated and beautifully engineered - which was developed and used during the nineteenth century. This book will be of interest to physicists and electrical engineers with an interest in the history of science, historians of science, engineering, instrumentation, television and radio.
目次
Introduction. Mirrors, flames and membranes: Observations of sparks through rotating mirrors. Acoustic measurements. The phonograph. Contact methods: The stroboscope. Simple manually set contacts. Semi automatic and fully automatic contact systems and other modificatiosn. Rotating contacts used for other purposes. The observation of repeated transient waveforms. Moving-coil oscillographs: Use of the moving-coil galvanometer. Theoretical considertions. Blondel, Duddell and the bifilar oscillograph. Bifilar instruments constructed by other experimenters. Single-wire instruments. Moving-iron oscillographs and compensated instruments: Moving-iron oscillographs. Externally compensated instruments. Miscellaneous methods: Chemical methods. Optical systems using polarised light. The mercury jet. Electrostatic and hot-wire oscillographs. The electrocapillary method. Cathode rays: The first steps. Improvements.
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