[Electric fields, magnetic fields, electromagnetic fields: apparatus for their generation and measurement].
D004560:Electricity; D004574:Electromagnetic Fields; D055590:Electromagnetic Phenomena; D008280:Magnetics; D011834:Radiation Monitoring / Q000295:instrumentation; D011835:Radiation Protection; D011851:Radioactivity; D011874:Radiometry / Q000295:instrumentation / Q000379:methods
Campi elettrici, campi magnetici, campi elettromagnetici: apparecchiature per la generazione e la misura.