## Unit Vector

In mathematics, a **unit vector** in a normed vector space is a vector (often a spatial vector) whose length is 1 (the unit length). A unit vector is often denoted by a lowercase letter with a "hat", like this: (pronounced "i-hat").

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### Some articles on unit vector:

**Unit Vector**- Curvilinear Coordinates

... may be uniquely specified using a number of linearly independent

**unit vectors**equal to the degrees of freedom of the space ... For ordinary 3-space, these

**vectors**may be denoted ...

... The Pauli matrices are a

**vector**of three 2×2 matrices that are used as spin operators ... Given a

**unit vector**in 3 dimensions, for example (a, b, c), one takes a dot product with the Pauli spin matrices to obtain a spin matrix for spin in the direction of the

**unit vector**... for spin-1/2 oriented in the direction given by the

**vector**...

... A frame consists of four

**unit vector**fields Here, the first is a timelike

**unit vector**field and the others are spacelike

**unit vector**fields, and is everywhere ...

... the local Lorentz frames of stationary (inertial) observers Here, is a timelike

**unit vector**field while the others are spacelike

**unit vector**fields at ... Each integral curve of the timelike

**unit vector**field appears in the cylindrical chart as a helix with constant radius (such as the red curve in the figure at right) ... curve (blue helical curve in the figure at right) of the spacelike basis

**vector**, we obtain a curve which we might hope can be interpreted as a "line of simultaneity" for the ring-riding observers ...

**Unit Vector**

... A

**unit vector**is a

**vector**of length one ... Examples of

**unit vectors**include i, j and k ...

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