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Tau (/ ˈ t aʊ, ˈ t ɔː, ˈ t ɒ /; [1] uppercase Τ, lowercase τ or ; Greek: ταυ) is the nineteenth letter of the Greek alphabet, representing the voiceless dental or alveolar plosive IPA:. In the system of Greek numerals , it has a value of 300.
The cursive form ϑ was retained by Unicode as U+03D1 ϑ GREEK THETA SYMBOL, separate from U+03B8 θ GREEK SMALL LETTER THETA. (There is also U+03F4 ϴ GREEK CAPITAL THETA SYMBOL .) For the purpose of writing Greek text, the two can be font variants of a single character, but θ and ϑ are also used as distinct symbols in technical and ...
The symbol ϵ (U+03F5) is designated specifically for the lunate form, used as a technical symbol. The symbol ϑ ("script theta") is a cursive form of theta (θ), frequent in handwriting, and used with a specialized meaning as a technical symbol. The symbol ϰ ("kappa symbol") is a cursive form of kappa (κ), used as a technical symbol.
Ramanujan's tau function in number theory; shear stress in continuum mechanics [62] a type variable in type theories, such as the simply typed lambda calculus; path tortuosity in reservoir engineering; in topology, a given topology; the tau in biochemistry, a protein associated to microtubules
degree symbol ° alt + 0252. check symbol √. alt + 38. and symbol & alt + 7. bullet symbol • alt + 35. number symbol # alt + 247. approximately symbol ≈. alt + 0248. diameter symbol ø. alt ...
Tau with caron: Nonstandard letter for Cypriot Greek representing /c/ [9] Ύύ: Upsilon with acute: High pitch on short vowel or rising pitch on long vowel Ὺὺ: Upsilon with grave: Archaic letter indicating normal or low pitch ῦ: Upsilon with circumflex: Archaic letter indicating high or falling pitch ὐ: Upsilon with smooth breathing
Series RC circuit. The RC time constant, denoted τ (lowercase tau), the time constant (in seconds) of a resistor–capacitor circuit (RC circuit), is equal to the product of the circuit resistance (in ohms) and the circuit capacitance (in farads):
The following is a Unicode collation algorithm list of Greek characters and those Greek-derived characters that are sorted alongside them. [2] [3] [4]Most of the characters of the blocks listed above are included, except for the Ancient Greek Numbers, Ancient Symbols and Ancient Greek Musical Notation.