electromagnetic wave
synchronized oscillations of electric and magnetic fields
radio wave
type of electromagnetic radiation
light
electromagnetic radiation at or near visible wavelengths
microwave
form of electromagnetic radiation
cosmic microwave background
electromagnetic radiation as a remnant from an early stage of the universe in Big Bang cosmology
continuous wave
method of radio transmission, in which a sinusoidal carrier wave is switched on and off. Information is carried in the varying duration of the on and off periods of the signal, e.g. by Morse code
monochromatic radiation
electromagnetic radiation with a single constant frequency
Terahertz gap
electromagnetic radiation from 0.1 to 10 THz
high-energy visible light
effects of blue light
hiss
naturally occurring ELF/VLF electromagnetic wave that is generated in the plasma of either the Earth's ionosphere or magnetosphere
whistler
electromagnetic wave propagating through the atmosphere that may be detected by a sensitive audio amplifier as a gliding high-to-low-frequency sound; originates during lightning discharges and are usually in the frequency range of 300 to 30,000 hertz