electromagnetic frequency definition
Definition of EMF-an EMF or electromagnetic field is the field or area of force caused by movement of an electrical charge and containing some amount of electromagnetic energy. Definition of EMR-Electromagnetic radiation, or electromagnetic radio frequency radiation EMFR. Extremely high frequency-EHF is defined as billions of cycles per second, and is the highest radio frequency band, extending from 30 to 300 GHz. or in wavelength size, waves are 1-10 mm or millimeters, also abbreviated MMW or mmW. Microwaves are an example.