In classical mechanics, the Laplace–Runge–Lenz vector (LRL vector) is a vector used chiefly to describe the shape and orientation of the orbit of one astronomical...

Blodgett Laplace vector – see Laplace–Runge–Lenz vector, below Laplace–Runge–Lenz vector (a.k.a. LRL vector, Laplace vector, Runge–Lenz vector, Lenz vector) –...

parallel layers with no disruption between the layers. Laplace transform Laplace–Runge–Lenz vector A vector used chiefly to describe the shape and orientation...