...However, this Russell-Littleton encounter theory, along with the planetesimal theory and the tidal theory, was short-lived when L. Spitzer pointed out (1939) that the hot gas particles ejected from stars do not solidify into planetesimals or planets, but rather dissipate in an instant.The above are, so to speak, historical theories of the origin of the solar system, but more recent theories include H. Alfven's electromagnetic capture theory (1942) of Sweden, CF Weizzecker's spiral nebula theory (1944) of Germany, O.Yu.Shmidt's meteorite capture theory (1944) of the Soviet Union, F.Hoyle's binary star theory (1944) of the UK, and FL Whipple's light pressure nebula theory (1947) of the US. In modern times, there is the nebular theory proposed by V.S. Safronov of the Soviet Union (1969), the nebular theory proposed by A.G.C. Cameron of the United States (1978), and in Japan, the Kyoto model and the inhomogeneous model, all of which are nebular theories. *Some of the terminology that refers to the "vortex nebula theory" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…しかしこのラッセル=リトルトンの遭遇説は,微惑星説,潮汐説ともども,恒星から噴出した高温ガス粒子は微惑星や惑星に固まるどころかまたたくまに雲散霧消してしまうというスピッツァーL.Spitzerの指摘(1939)によって短命に終わったのである。 以上はいわば歴史的な太陽系起源説であるが,もっと新しい説にはスウェーデンのH.アルベーンの電磁捕獲説(1942),ドイツのC.F.ワイツツェッカーの渦動星雲説(1944),ソ連のシミットO.Yu.Shmidtの隕石捕獲説(1944),イギリスのホイルF.Hoyleの連星説(1944),アメリカのホイップルF.L.Whippleの光圧星雲説(1947)などがある。また,現代ではソ連のサフロノフV.S.Safronovの星雲説(1969),アメリカのキャメロンA.G.W.Cameronの星雲説(1978),そして日本では京都モデル,非均質モデルがあり,いずれも星雲説である。… ※「渦動星雲説」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
(4) Estrogen It is well known that the secretion o...
…[Mitsuo Chihara]. . . *Some of the terminology t...
A norm that determines certain violations as illeg...
…In the broad sense of coal washing, the central ...
…He presented tableware and craft works using eng...
This fossil ape was discovered in 1910 in Siwalik,...
...As it ages, the area around its mouth turns wh...
[1] 〘 noun 〙 A group or association of people with...
…A mineral belonging to the alkali pyroxene famil...
...is a type of landform in which faults are expr...
…The Rig-Veda also contains some creation myths. ...
… [Norio Hasegawa] [Ishinomaki Minato] This port ...
1819‐91 Ottoman politician and man of letters. The...
Physical phenomena occurring in the atmosphere tha...
The first political and religious party in Islam. ...