Relativity takes the Lorentz transformation of space-time suggested by invariance of Maxwell's equations and imposes it upon dynamics as well (a revision of Newton's laws of motion). In this example, the Lorentz transformation affects the x -direction only (the relative motion of the two frames is along the x -direction). The relations connecting time and space are ( primes denote the moving conductor frame) : x ′ = γ γ ( x − − v t ) , x = γ γ ( x ′ + v t ′ ) , t ′ = γ γ ( t − − v x c 2 ) , t = γ γ ( t ′ + v x ′ c 2 ) .