antenna loop
121Photosynthesis — Composite image showing the global distribution of photosynthesis, including both oceanic phytoplankton and vegetation …
122Sears Tower — Infobox Skyscraper building name=Sears Tower previous building=World Trade Center year built=1974 surpassed by building = Petronas Twin Towers year highest=1974 year end= 1998 location=Chicago, Illinois, USA use= Office, observation,… …
123Radio navigation — or radionavigation is the application of radio frequencies to determining a position on the Earth. Like radiolocation, it is a type of radiodetermination.RDF / ADF / NDBThe first system of radio navigation was the Radio Direction Finder, or RDF.… …
124WPIX — This article is about the New York City television station. For the NYC radio station formerly called WPIX FM, see WEMP. WPIX Branding PIX 11 (general) PIX 11 News (newscasts) (Pronounced as picks ) The CW PIX 11(during promos for CW shows)… …
125Mercury-Redstone 4 — Mission insignia Mission statistics Mission name Mercury Redstone 4 Spacecraft name Liberty Bell 7 Spacecraft mass 1,286 …
126WDCW — Washington, D.C. Branding DC 50 Slogan Serious Fun Channels Digital: 50 (UHF) …
127Andrew Alford — (5 August 1904 25 January 1992) was an American electrical engineer and inventor.Born in Samara, Russia Alford invented and developed antennas for radio navigation systems, now used for VHF omnidirectional range and instrument landing… …
128Radio — is the transmission of signals, by modulation of electromagnetic waves with frequencies below those of visible light.Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of… …
