radio wave

radio wave
an electromagnetic wave having a wavelength between 1 millimeter and 30,000 meters, or a frequency between 10 kilohertz and 300,000 megahertz.
[1915-20]

* * *

Wave from the portion of the electromagnetic spectrum at lower frequencies than microwaves.

The wavelengths of radio waves range from thousands of metres to around 30 cm. These correspond to frequencies as low as 3 Hz and as high as 1 gigahertz (109 Hz). Radio-wave communications signals travel through the air in a straight line, reflect off of clouds or layers of the ionosphere, or are relayed by satellites in space. They are used in standard broadcast radio and television, short-wave radio, navigation and air-traffic control, cellular telephony, and even remote-controlled toys.

* * *


Universalium. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Radio Wave — may refer to: *Radio frequency *Radio Wave 96.5, a radio station in Blackpool, UK …   Wikipedia

  • radio wave — radio ,wave noun count an ELECTROMAGNETIC wave that radio signals can be sent on …   Usage of the words and phrases in modern English

  • radio wave — ► NOUN ▪ an electromagnetic wave of radio frequency …   English terms dictionary

  • radio wave — n. any electromagnetic wave at a radio frequency …   English World dictionary

  • radio wave — radio .wave n [C usually plural] a form of electric energy that can move through air or space …   Dictionary of contemporary English

  • Radio Wave 96.5 — Infobox Radio station name = Radio Wave 96.5 FM city = Blackpool area = The Fylde: FM branding = slogan = You love it. We play it.cite news | title = Major marketing for UTV stations | publisher = radiotoday.co.uk | date = 2000 06 16 | url = http …   Wikipedia

  • radio wave — noun an electromagnetic wave with a wavelength between 0.5 cm to 30,000 m (Freq. 2) • Syn: ↑radio emission, ↑radio radiation • Hypernyms: ↑electromagnetic radiation, ↑electromagnetic wave, ↑nonparticulate radiation …   Useful english dictionary

  • radio wave — UK / US noun [countable] Word forms radio wave : singular radio wave plural radio waves physics an electromagnetic wave that radio signals can be sent on …   English dictionary

  • radio wave — radijo banga statusas T sritis automatika atitikmenys: angl. hertzian wave; radio wave vok. Funkwelle, f; Radiowelle, f rus. радиоволна, f pranc. onde hertzienne, f; onde radioélectrique, f …   Automatikos terminų žodynas

  • Radio wave pest control — The Concept of radio wave (RW) or radio frequency (RF) in the use of controlling the behavior of living organisms have been speculated on for years. Only recently, studies have shown promise in using this technology in commercial… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”