Ferrolic is a device by designer Zelf Koelman that uses ferrofluid and magnetic fields to display moving patterns, text, and even the time in a beautiful and unique way.
A few years ago I fell in love with the magical characteristics of a little black “blob” in a bottle. One could manipulate the position and shape of a floating drop of Ferro Fluid with a magnet. The dynamics and shape of this liquid body was much like a living entity. I decided to allow this entity to live its own life and have a function. A year of research and engineering eventually resulted in Ferrolic.