Numerical inputs are not error trapped.
and relative permeability (μr). Calculated values do not change until
the "Calculate" button is clicked.
It uses the standard textbook equation to compute the skin depth. An explanation
can be found here.
sources for materials properties typically present permeability in term of relative
permeability (μr), that is what is used for input in the calculator.
Most typical materials used for signal and power carrying cables - e.g., copper,
aluminum - have a relative permeability of 1. Materials with magnetic properties
such as steel and iron have relative permeabilities ranging from hundreds to hundreds
Here is a table of materials