The portion of the radio frequency spectrum between 3 and 30 MHz This frequency range, characterized by wavelengths between 10 and 100 meters, is commonly called the Short Wave band
Radio wave communication occurs at what is considered high frequency There are three main types of high frequency
administered with a machine that generates a rapidly oscillating current that is transmitted to the skin through glass electrodes This produces heat deep in the dermal layer of the skin and stimulates the skin and improves circulation, and increases the absorption rate of products and kills bacteria TOP
gravitational radiation, in the megahertz to gigahertz region, which is proposed to have been produced by the Big Bang or by the collision of massive astronomical objects or artificially in the laboratory. Gravitational waves having frequencies higher than 100 kHz