Jednoslojni Kalemovi - Single Layer air-core coils (Solenoids)
Solenoid ->
http://en.wikipedia.org/wiki/Solenoidit calculates inductance of Solenoids
In the past i worked a lot with electronics RF(Radio Frequency) technique. In the past there were no accurate online calculators for such things,
so i wrote a bunch of these calculators for various purposes.