Electric lines -- Health aspects -- Research -- United States. / https://id.loc.gov/authorities/subjects/sh85041783 https://id.loc.gov/authorities/subjects/sh00005598 https://id.loc.gov/authorities/subjects/sh2002006576 https://id.loc.gov/authorities/names/n78095330-781 : National Research Council (U.S.).
Electric lines -- United States -- History. / https://id.loc.gov/authorities/subjects/sh85041783 https://id.loc.gov/authorities/names/n78095330-781 https://id.loc.gov/authorities/subjects/sh99005024 : Wuebben, Daniel L.,
Electric machinery industry -- India. / https://id.loc.gov/authorities/subjects/sh85041826 https://id.loc.gov/authorities/names/n80125948-781 : Kumar, Anjali,
Electric measurements Instruments -- See Also the narrower term Oscilloscopes
Here are entered works on test instruments in which the variations in an electrical quantity appear temporarily as a visible waveform on the screen of a cathode ray tube. Works on instruments that combine an oscilloscope with a camera to produce a permanent record of a waveform are entered under Cathode ray oscillographs.
Here are entered works on electric generators, motors, transducers, sensing instruments, microphones, and similar devices, which convert electrical energy into mechanical energy, or the reverse, and which normally function as components of larger systems, e.g. electric power systems, information systems, control systems, etc.