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''Tera'' is a unit prefix in the metric system denoting multiplication by 1012 or (one trillion short scale; one billion long scale). It has the symbol T. ''Tera'' is derived from Greek word , meaning "monster". The prefix ''tera-'' was confirmed for use in the SI in 1960. Examples of its use: *terahertz radiation: electromagnetic waves within the band of frequencies from 0.3 to 3 THz *terabit, tebibit, terabyte and tebibyte, units used in data storage. *teragram: equal to 109 kg. The Great Pyramid of Giza has a mass of about 6 Tg. *terasecond: approximately 31,558 years *teralitre: equal to 109 m3. Lake Zurich contains about 4 TL of water. *terawatt: used to measure total human energy consumption. In 2010 it was 16 TW. *terametre (= 1,000,000,000 km): Light travels 1.079 Tm in one hour. he:תחיליות במערכת היחידות הבינלאומית#טרה 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「Tera-」の詳細全文を読む スポンサード リンク
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