The image above represents linear density.

To compute for linear density, two essential parameters are needed and these parameters are **Number of Atoms Centered on Direction Vector (N) **and **Length of Direction Vector (L).**

The formula for calculating linear density:

LD = ^{N}/_{L}

Where:

LD = Linear Density

N = Number of Atoms Centered on Direction Vector

L = Length of Direction Vector

Given an example;

Find the linear density when the number of atoms centered on direction vector is 10 and the length of direction vector is 2.

This implies that;

N = Number of Atoms Centered on Direction Vector = 10

L = Length of Direction Vector = 2

LD = ^{N}/_{L}

LD = ^{10}/_{2}

LD = 5

Therefore, the **linear density **is **5 atoms/m.**