Tau is the 19th letter of the Greek alphabet. In the system of Greek numerals it has a value of 300. The letter is widely used in the physical and biological sciences,and is sometimes used as time variable,to avoid confusing 't' as temperature. The Greek alphabet has an important role in the nomenclature of astronomical bodies and subatomic particles | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library / Parker, David |
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