It is usually represented within a particular energy or length scale, such as Planck units.

Ohm's law has been observed on a wide range of length scales.

However, on small length scales, there is an important balancing force from surface tension.

When the two length scales are comparable, there may be resonances.

The cross section of a given process is usually the square of the length scale.

This length scale is determined by the range of the Yukawa potential.

Hierarchical structures are distinct features seen throughout different length scales.

This length scale could be, for example, the radius of the body in a fluid.

However, L can be used as a length scale in the analysis of the changes due to stratification.

Changing the length scale also changes the number of degrees of freedom.