Electromagnetism

Electromagnetism/Electric Potential

Pedestrians possess a positive charged electric field which when they walk through the train station doors gather positively charged pixels. The pixels are attracted to the pedestrians due to their positive charge thus the force and acceleration is in the direction of the field (pedestrians). The buildings possess a negative charge repelling the pixels except for the train station thus attracting the pixels back once they are not wanted. When the pixels reach the end of their life they lose their positive charge and become negatively charged attaching to buildings.

Abstract:

Objects may possess a property known as an electric charge. An electric field exerts a force on charged objects, accelerating them in the direction of the force, in either the same or the opposite direction of the electric field. If the charged object has a positive charge, the force and acceleration will be in the direction of the field. This force has the same direction as the electric field vector, and its magnitude is given by the size of the charge multiplied with the magnitude of the electric field. Classical mechanics explores the concepts such as force, energy, potential etc. in more detail.

Electromagnetism, Second Edition, by I. S. Grant, W. R. Phillips, pp. 542. ISBN 0-471-92712-0. Wiley-VCH, September 2003.