Someone has just asked me about the device sold to stop your water pipes and tanks furring up, which consists of a coil wound around the pipe that is then excited by an oscillator.
Personally, I think the whole thing to be bollox.
Does anybody know the physics behind it?
I cannot see how orienting the calcium saly ions in one particular direction will stop furring up some distance away especially if there has been turbulent flow in between.
I advised him to get a water softener fitted instead.