Click any word in a definition or example to find the entry for that word
physics the rate at which a sound wave, light wave, or radio wave vibrates (=moves up and down)
a unit for measuring the frequency of sound waves and radio waves
a unit for measuring radio waves, containing 1000 hertz. The written abbreviation is kHz.
a radio wave of more than 1,000 metres used for broadcasting. The written abbreviation is LW.
a range of radio waves between 100 and 1000 metres in length, used for broadcasting
physics to change the energy level or frequency of a radio wave
an electromagnetic wave that radio signals can be sent on
a type of radio wave that is used for broadcasting across large distances
physics a range of radio waves or light waves
very high frequency: a range of radio waves that produces good sound quality