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Mega-
Mega is a unit prefix in the metric system denoting a factor of one million (106 or ). It was confirmed for use in the International System of Units (SI) in 1960. ''Mega'' comes from the Greek , meaning "great". ==Other common examples of usage==
* megapixel – 1 million pixels in a digital camera * one megatonne (of TNT), equivalent to approx. 4 Petajoules; is the approximate energy released on igniting one million tonnes of TNT, and is a unit often used in measuring the explosive power of nuclear weapons. * megahertz — frequency of electromagnetic radiation for radio and television broadcasting, GSM, etc. 1 MHz = 1,000,000 Hz.
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「Mega-」の詳細全文を読む
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