翻訳と辞書 Words near each other ・ Magnetoplasmadynamic RF thruster ・ Magnetoplasmadynamic thruster ・ Magnetoquasistatic field ・ Magnetoreception ・ Magnetoresistance ・ Magnetoresistive random-access memory ・ Magnetorheological damper ・ Magnetorheological elastomer ・ Magnetorheological finishing ・ Magnetorheological fluid ・ Magnetorotational instability ・ Magnetorquer ・ Magnetosheath ・ Magnetosome ・ Magnetosonic wave ・ Magnetosphere ・ Magnetosphere chronology ・ Magnetosphere of Jupiter ・ Magnetosphere of Saturn ・ Magnetosphere particle motion ・ Magnetospheric electric convection field ・ Magnetospheric eternally collapsing object ・ Magnetospheric Multiscale Mission ・ Magnetospirillum ・ Magnetostatic loudspeaker ・ Magnetostatics ・ Magnetostratigraphy ・ Magnetostriction ・ Magnetotactic bacteria ・ Magnetotaxis Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Magnetosphere ： ウィキペディア英語版 Magnetosphere A magnetosphere is the region of space surrounding an astronomical object in which charged particles are controlled by that object's magnetic field.〔(【引用サイトリンク】url=http://science.nasa.gov/heliophysics/focus-areas/magnetosphere-ionosphere/ )〕 Near the surface of many astronomical objects, the magnetic field resembles that of a dipole. Farther away from the surface, the field lines can be significantly distorted by the flow of electrically conducting plasma emitted from a nearby star (e.g. the solar wind from the Sun). ==History== (詳細はWilliam Gilbert discovered that the magnetic field on the surface of Earth resembled that on a terrella, a small, magnetized sphere. In the 1940s, Walter M. Elsasser proposed the model of dynamo theory, which attributes Earth's magnetic field to the motion of Earth's iron outer core. Through the use of magnetometers, scientists were able to study the variations in Earth's magnetic field as functions of both time and latitude and longitude. Beginning in the late 1940s, rockets were used to study cosmic rays. In 1958, Explorer 1, the first of the Explorer series of space missions, was launched to study the intensity of cosmic rays above the atmosphere and measure the fluctuations in this activity. This mission observed the existence of the Van Allen radiation belt (located in the inner region of Earth's magnetosphere), with the Explorer 3 mission later that year definitively proving its existence. Also in 1958, Eugene Parker proposed the idea of the solar wind. The term 'magnetosphere' was proposed by Thomas Gold in 1959. The Explorer 12 mission (1961) led to the observation by Cahill and Amazeen in 1963 of a sudden decrease in the strength of the magnetic field near the noon meridian, later named the magnetopause. In 1983, the International Cometary Explorer observed the magnetotail, or the distant magnetic field.〔 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「Magnetosphere」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.