Newton's Third Law applies in weak form primarily in the context of electromagnetic forces, particularly when considering the interactions between moving charges. An example discussed involves two identical charges moving in perpendicular directions, where the magnetic forces they exert on each other do not directly oppose the electrical forces, yet the total force remains equal and opposite. This scenario highlights that while the forces may not be directly opposite, momentum is conserved due to the momentum carried by the electromagnetic fields. For further exploration of these concepts, consulting texts on electrodynamics, such as Griffiths, is recommended. Understanding these principles is crucial for grasping the nuances of electromagnetic interactions.
