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1838 in science : ウィキペディア英語版
1838 in science

The year 1838 in science and technology involved some significant events, listed below.
==Astronomy==

* Friedrich Wilhelm Bessel makes the first accurate measurement of distance to a star, 61 Cygni, using parallax. Thomas Henderson (Alpha Centauri) and Friedrich Georg Wilhelm Struve (Vega) announce their measurements using parallax shortly afterwards.
* Claude Servais Mathias Pouillet makes the first quantitative measurements of the heat emitted by the Sun.
* Peter Andreas Hansen publishes a revision of the lunar theory, ''Fundamenta nova investigationis orbitae verae quam luna perlustrat''.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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