What is a homo-polar motor?
A homopolar motor is one of the simplest motors built due to the fact that it uses direct current to power the motor in one direction. The magnet’s magnetic field pushes up towards the battery and the current that flows from the battery travels perpendicularly from the magnetic field. This causes the creation of a force perpendicular to both the magnetic field and current. This force, known as the Lorentz force, is exerted on the copper wire (the conductor) causing it to spin
Acid Etching is defined as the process of cutting a hard surface, such as metal, using a specially formulated acid for etching (etchant) in order to create a design on the metal. The idealiser is crafted from copper sheet and is folded into place by the user.