high-frequency aerial
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Ultra high frequency — (UHF) designates a range (band) of electromagnetic waves with frequencies between 300 MHz and 3 GHz (3,000 MHz). Also known as the decimeter band or decimeter wave as the wavelengths range from ten to one decimeters. Radio waves with frequencies… … Wikipedia
High voltage — The term high voltage characterizes electrical circuits, in which the voltage used is the cause of particular safety concerns and insulation requirements. High voltage is used in electrical power distribution, in cathode ray tubes, to generate X… … Wikipedia
high — Synonyms and related words: Dutch courage, Gymnasium, Hydromatic, Latin school, Olympian, Realgymnasium, Realschule, a bit much, a high, abandoned, above, abovestairs, academy, accented, acme, acute, aerial, afflicted, aged, aggrandized, agog,… … Moby Thesaurus
Aerial perspective — or atmospheric perspective is the effect on the appearance of an object by the atmosphere between it and a viewer (or the technique of depicting this effect in a work of art, such as a landscape painting). As the distance between an object and a… … Wikipedia
blade aerial — A wideband, quarter wavelength antenna used on aircraft for communicating or navigating in the UHF (ultrahigh frequency) or VHF (very high frequency) bands. The shape of the antenna allows transmission and reception of a wide band of frequencies … Aviation dictionary
whip aerial — A flexible, nondirectional, quarter wave antenna usually in the high or very high frequency range and which is normally vertically polarized … Aviation dictionary
Very low frequency — or VLF refers to radio frequencies (RF) in the range of 3 kHz to 30 kHz. Since there is not much bandwidth in this band of the radio spectrum, only the very simplest signals are used, such as for radio navigation. Also known as the myriameter… … Wikipedia
Huff-Duff — High frequency direction finder is usually known by its acronym HF/DF, pronounced Huff Duff. This has become the common name for this type of radio direction finder, and was coined during World War II.The idea of using two or more radio receivers … Wikipedia
sound reception — Introduction response of an organism s aural mechanism, the ear, to a specific form of energy change, or sound waves. Sound waves can be transmitted through gases, liquids, or solids, but the hearing function of each species is particularly … Universalium
Antenna (radio) — Whip antenna on car … Wikipedia
Invention of radio — Great Radio Controversy redirects here. For the album by the band Tesla, see The Great Radio Controversy. Contents 1 Physics of wireless signalling 2 Theory of electromagnetism … Wikipedia
