In the Natural Units environment, the arguments for the exponential functions can be unit-free, or multiplied by a unit with the dimension logarithmic_gain. An error is returned if the dimension of the argument is not one of logarithmic gain.

By default, the units of the object returned are a ratio of wave numbers (inverse length). Using energy conversions, this ratio is proportional to a voltage ratio and its square is proportional to a power ratio.

Note that the first calling sequence must be entered in 2-D math notation by using either the palettes or command completion. The exponential  will not be recognized if it is entered manually.

For other properties, see the global function exp.