Radiofrequency (RF) refers to electromagnetic waves with frequencies in the range of around 3 kHz to 300 GHz. These waves can be generated by oscillating electric currents or magnetic fields, and they are used for various applications such as communication, radar systems, and medical equipment like MRI machines. The term "radiofrequency" is often associated with radio broadcasting, where it refers to the frequency of electromagnetic waves that carry audio signals over the airwaves.