radio heliograph

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• radio-heliograph —   n. arrangement of radio telescopes for receiving and recording the radio waves emitted by the sun …   Dictionary of difficult words

• Heliograph — A Heliograph (from the Greek helios (Lang el| Ἥλιος), meaning sun , and (γραφειν) = write) is a wireless solar telegraph that signals using Morse code flashes of sunlight reflected by a mirror. The flashes are produced by momentarily pivoting the …   Wikipedia

• Okayama Astrophysical Observatory — Das National Astronomical Observatory of Japan (kurz: NAOJ; jap. 国立天文台, kokuritsu temmondai, dt. „staatliches Observatorium“) ist eine astronomische Forschungsinstitution in Japan, die mehrere Observatorien in Japan und eines in Hawaii betreibt.… …   Deutsch Wikipedia

• National Astronomical Observatory of Japan — The National Astronomical Observatory of Japan (国立天文台, kokuritsu tenmondai?) (NAOJ) is an astronomical research organisation comprising several facilities in Japan, as well as an observatory in Hawaii. It was established in 1988 as an… …   Wikipedia

• National Astronomical Observatory of Japan — Observatoire astronomique national du Japon L Observatoire astronomique national du Japon (en anglais: National Astronomical Observatory of Japan NAOJ) est une organisation astronomique de recherche comprenant plusieurs équipements au Japon,… …   Wikipédia en Français

• Observatoire astronomique national du Japon — 34° 34′ 34″ N 133° 35′ 38″ E / 34.5761, 133.594 …   Wikipédia en Français

• National Astronomical Observatory of Japan — Das National Astronomical Observatory of Japan (kurz: NAOJ; jap. 国立天文台, kokuritsu temmondai, dt. „staatliches Observatorium“) ist eine astronomische Forschungsinstitution in Japan, die mehrere Observatorien in Japan und eines in Hawaii betreibt.… …   Deutsch Wikipedia

• Morse code — Chart of the Morse code letters and numerals Morse code is a method of transmitting textual information as a series of on off tones, lights, or clicks that can …   Wikipedia

• military communication — Introduction       the transmission of information from reconnaissance and other units in contact with the enemy and the means for exercising command by the transmission of orders and instructions of commanders to their subordinates. As such, it… …   Universalium

• Distress signal — Call for help redirects here. For the TV show, see Call for Help. A distress signal is an internationally recognized means for obtaining help. Distress signals take the form of or are commonly made by using radio signals, displaying a visually… …   Wikipedia

• Signal lamp — training during World War II. A signal lamp (sometimes called an Aldis lamp, named after Arthur C. W. Aldis who invented a widely used design) is a visual signaling device for optical communication (typically using Morse code). Modern signal… …   Wikipedia