Recent content by coopre

So I want to know if these are true or false, if false why are they A geodesic is a path between two points in spacetime that maximizes the invariant distance ds2. A massive particle's rest mass increases with velocity. If I re a laser beam in the general direction of a black hole...

Homework Statement A free particle is moving in the x direction through Minkowski spacetime, and has velocity V as measured by a stationary observer at x = 0; t = 0. Express the particle's world-line parametrically in terms of V , parametrized by the particle's proper time  Homework...