T is the twentieth letter of the English alphabet.
surface tension
a property of liquids caused by intermolecular forces near the surface leading to the apparent presence of a surface film and to capillarity , etc
Tesla
Nikola ( ˈnɪkələ ). 1857–1943, US electrical engineer and inventor , born in Smiljan, now in Croatia . His inventions include a transformer , generators , and dynamos
T-number
a function of the f-number of a camera lens that takes into account the amount of light actually transmitted by the lens
do's and don'ts
If someone tells you the dos and don'ts of a particular situation , they advise you what you should and should not do in that situation.
the dos and don'ts of something
the things that you should and should not do in a particular situation