Complex sentence: A similar equation, the Vlasov Equation, is valid for a plasma in the so-called plasma approximation, in which charged particles are considered moving in the electromagnetic field collectively generated by all other particles, and hard collisions between the charged particles are neglected.
Split into simpler sentences: A similar equation, the Vlasov equation, is valid for a plasma in the so-called plasma approximation. In the plasma approximation, charged particles are considered to be moving in the electromagnetic field collectively generated by all other particles, and hard collisions between the charged particles are neglected.