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%ما هو (من)٪ 1 - تعريف

ONE-DIMENSIONAL PHYSICAL QUANTITY

Scalar quantity (physics)

Scalar (physics)

In physics, scalars (or scalar quantities) are physical quantities that are unaffected by changes to a vector space basis (i.e.

https://en.wikipedia.org/wiki/Scalar_(physics)

scalar

WIKIMEDIA DISAMBIGUATION PAGE

Scalars; Scalar quantity; Scalar quantities; Scalar (disambiguation); Scalar value

1. <mathematics> A single number, as opposed to a vector or matrix of numbers. Thus, for example, "scalar multiplication" refers to the operation of multiplying one number (one scalar) by another and is used to contrast this with "matrix multiplication" etc. 2. <architecture> In a parallel processor or {vector processor}, the "scalar processor" handles all the sequential operations - those which cannot be parallelised or vectorised. See also superscalar. 3. <programming> Any data type that stores a single value (e.g. a number or Boolean), as opposed to an aggregate data type that has many elements. A string is regarded as a scalar in some languages (e.g. Perl) and a vector of characters in others (e.g. C). (2002-06-12)

Scalar

WIKIMEDIA DISAMBIGUATION PAGE

Scalars; Scalar quantity; Scalar quantities; Scalar (disambiguation); Scalar value

·noun In the quaternion analysis, a quantity that has magnitude, but not direction;

- distinguished from a vector, which has both magnitude and direction.

ويكيبيديا

Scalar (physics)

In physics, scalars (or scalar quantities) are physical quantities that are unaffected by changes to a vector space basis (i.e., a coordinate system transformation). Scalars are often accompanied by units of measurement, as in "10 cm". Examples of scalar quantities are mass, distance, charge, volume, time, speed, and the magnitude of physical vectors in general (such as velocity).

A change of a vector space basis changes the description of a vector in terms of the basis used but does not change the vector itself, while a scalar has nothing to do with this change. In classical physics, like Newtonian mechanics, rotations and reflections preserve scalars, while in relativity, Lorentz transformations or space-time translations preserve scalars. The term "scalar" has origin in the multiplication of vectors by a unitless scalar, which is a uniform scaling transformation.

https://en.wikipedia.org/wiki/Scalar (physics)