Radio waves range from 300 gigahertz (GHz), or a wavelength of 1 millimeter, to 3 kilohertz (kHz), which corresponds to a wavelength of 100 kilometers. Radio waves are the lowest frequency within the electromagnetic spectrum. The wavelength is the distance from the peak of one wave to the next.Know More
The radio spectrum is typically divided into AM, or amplitude modulation, and FM, frequency modulation. AM waves vary in amplitude but have constant frequency and range from 540 to 1600 kilohertz. FM waves vary in frequency but are constant in amplitude, and range from 88 to 108 megahertz (MHz). Radio waves are not only used in radio transmission, but also in radar, satellite communications, computer networking, television transmission, short wave radio and certain medical procedures, such as magnetic resonance imaging.
Because they are a type of electromagnetic radiation, radio waves travel at the speed of light. The electromagnetic spectrum continues upward after the portion designated as radio waves. The next portion is devoted to microwave radiation, then infrared radiation, then visible light, then ultraviolet radiation and finally X-rays. While the radiation from radio waves is not dangerous to the human body, extremely low frequency radio waves are perceptible to most people. Electromagnetic radiation damage typically begins further up the electromagnetic spectrum, such as with microwave radiation.Learn More
A transverse wave is one where the displacement of the medium in which the wave is travelling is perpendicular to its propagation. A pond ripple is an example of a transverse wave.Full Answer >
Gold, silver, aluminum, Plexiglas and hybrid pigments are materials that reflect infrared light. The atomic makeup of materials is what renders them transparent, opaque or reflective to infrared radiation.Full Answer >
Pressure waves in the air cause sound waves to form. However, sound waves can also form in water and in solids. The speed of sound varies significantly depending on the temperature and medium it travels through.Full Answer >
The formation of a rainbow and the splitting of light when it passes through a prism are examples of refraction. A pencil placed in a beaker of water looks bent due to refraction of light.Full Answer >