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Logarithmic units : ウィキペディア英語版 | Logarithmic units Logarithmic units are abstract mathematical units that can be used to express any quantities (physical or mathematical) that are defined on a logarithmic scale, that is, as being proportional to the value of a logarithm function. In this article, a given logarithmic unit will be denoted using the notation (), where ''n'' is a positive real number, and () here denotes the indefinite logarithm function Log(). == Examples ==
Examples of logarithmic units include common units of information and entropy, such as the ''bit'' () and the ''byte'' 8() = (), also the ''nat'' () and the ''ban'' (); units of relative signal strength magnitude such as the ''decibel'' 0.1() and ''bel'' (), ''neper'' (), and other logarithmic-scale units such as the Richter scale point () or (more generally) the corresponding order-of-magnitude unit sometimes referred to as a ''factor of ten'' or ''decade'' (here meaning (), not 10 years).
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「Logarithmic units」の詳細全文を読む
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