τ refers to the nineteenth Greek letter, and Chinese pronunciation is the fourth sound of Tao.
Greek alphabet is a letter used in Greek, and it is also widely used in mathematics, physics, biology, chemistry, astronomy and other disciplines. Greek letters are similar to English letters and Russian letters, but with different symbols and the same phonetic properties.
Greek letters are the earliest letters with vowels in the world. Cyrillic letters and Georgian letters used in Russian and Ukrainian are all developed from Greek letters, so people who have studied Russian will feel deja vu when they use Greek letters. Greek letters have entered the vocabulary of many languages. For example, the international word Delta comes from the Greek letter δ, because δ is a triangle.
Extended data
Some mathematicians believe that the real pi should be 2π, and the "real pi" should be recorded as τ (pronunciation: /tau/). In 200 1 year, American mathematician Bob Palais published an article entitled "π is wrong! "(π is wrong! ) paper.
The real pi day is called 2π, which is τ. Although many mathematicians are against it, many scholars agree with Mack hart, an American mathematician, who established the website tauday.com, calling on people to use the Greek letter τ (pronounced: /tau/) to express the "correct" pi.
Whether pi is π or τ has been controversial in the field of mathematics. Supporters of the new PI chose to celebrate the "real" pi day on June 28th.
Baidu encyclopedia-τ
Baidu Encyclopedia-Greek alphabet