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| OtherNames = |Section1= |Section2= |Section3= |Section4= |Section5=〔(【引用サイトリンク】title=METHANE )〕 |Section6= }} Methane ( or ) is a chemical compound with the chemical formula (one atom of carbon and four atoms of hydrogen). It is the simplest alkane and the main component of natural gas. The relative abundance of methane on Earth makes it an attractive fuel, though capturing and storing it poses challenges due to its gaseous state found at standard conditions for temperature and pressure. In its natural state, methane is found both below ground and under the sea floor, where it often finds its way to the surface and the atmosphere where it is known as atmospheric methane. ==History== In November 1776, methane was first scientifically identified by Italian physicist Alessandro Volta in the marshes of Lake Maggiore straddling Italy and Switzerland, having been inspired to search for the substance after reading a paper written by Benjamin Franklin about "flammable air".〔Volta, Alessandro (1777) ''Lettere del Signor Don Alessandro Volta … Sull' Aria Inflammabile Nativa delle Paludi'' (of Signor Don Alessandro Volta … on the flammable native air of the marshes ), Milan, Italy: Giuseppe Marelli.〕 Volta captured the gas rising from the marsh, and by 1778 had isolated the pure gas.〔(【引用サイトリンク】title=Methane )〕 He also demonstrated means to ignite the gas with an electric spark.〔 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「Methane」の詳細全文を読む スポンサード リンク
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