Torque Torque Torque, moment, or moment of force is the rotational equivalent of linear force. The concept originated with the studies of Archimedes on the usage of levers. Just as a linear force is a push or a pull, a torque can be thought of as a twist to an object. The symbol for torque is typically formula_1, the lowercase Greek letter "tau". When being referred to as moment of force, it is commonly denoted by "M". In three dimensions, the torque is a pseudovector; for point particles, it is given by the cross product of the position vector (distance vector)
Greek Braille ά, Ά, αί. It's not used for diaeresis; ϊ is just . Digits are the same as in English Braille. Arithmetical symbols are: International letter assignments differ somewhat from those above. In Modern Greek Braille, for example, the letter omega (ω) is written the same as Latin "j", whereas in English or French braille texts it is written as a "w", which it resembles in print. Similarly, Modern Greek upsilon is written as Latin "y", but in international Greek it's written as "u", and the letter eta is inverted. This alphabet is used, for example, in mathematical notation in an