T

In physics, symbol for tesla, the SI unit of magnetic flux density, equal to a flux density of one weber of flux per square metre.

T

20th letter of the English alphabet. Its sound is usually an unvoiced alveolar plosive. The earliest form was X, which the Phoenicians called tau, a cross or sign, but in the Greek alphabet (still called tau) its form was Τ, τ.

It was the 19th letter of the Greek and Latin alphabets, and the 22nd and last letter of the North Semitic alphabet, as it is in modern Hebrew. In English spelling it is also used in the diagraph th, for voiced and unvoiced dental fricatives.