|
Tau (uppercase Τ, lowercase τ; (ギリシア語:ταυ) (:taf)) is the 19th letter of the Greek alphabet. In the system of Greek numerals it has a value of 300. The name in English is pronounced or ,〔(【引用サイトリンク】publisher=Oxford University Press )〕 but in modern Greek it is (:taf). This is because the pronunciation of the combination of Greek letters αυ has changed from ancient to modern times from one of to either or , depending on what follows (see Greek orthography). Tau was derived from the Phoenician letter taw (𐤕). Letters that arose from tau include Roman T and Cyrillic Te (Т, т). The letter occupies the Unicode slots U+03C4 (lowercase) and U+03A4 (uppercase). In HTML, they can be produced with named entities ( τ and Τ), decimal references (τ and Τ), or hexadecimal references (τ and Τ).== Modern usage == The lower-case letter τ is used as a symbol for: * specific tax amount. * TAU (spacecraft), proposed spacecraft 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「Tau」の詳細全文を読む スポンサード リンク
|