| 翻訳と辞書 |
| International Scientific Radio Union ： ウィキペディア英語版 |
International Union of Radio Science
The International Union of Radio Science (abbreviated URSI, after its French name, ) is one of 26 international scientific unions affiliated to the International Council for Science (ICSU).
== History and objectives ==
URSI was officially created in 1919, during the Constitutive Assembly of the International Research Council (now ICSU), based on the earlier (1913–1914) when the only radio communication system was radiotelegraphy. It has held a general assembly every three years from 1922. Fifty years ago URSI was one of the most important promoters of the International Geophysical Year. It co-sponsors the ''Radio Science'' journal (co-sponsored by the American Geophysical Union) as well as the ''Journal of Atmospheric and Solar-Terrestrial Physics''.
URSI's original objective (to encourage "scientific studies of radiotelegraphy, especially those which require international cooperation") has been broadened to include all radio science, from telecommunications to radio astronomy, acquisition of radar information about distant passive objects, studies of the radiation stimulated or spontaneously emitted by these objects, biological effects of electromagnetic radiation and active modification of objects by radio waves, within the spectrum from extremely low frequency to the optical domain.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「International Union of Radio Science」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|