/sci/ - Science & Math

Its easy to see that with time-like geodesics (when L=g_{u, v}x'^{u} y'^{v} = 1 along the geodesics) the geodesic equation drops out of the Euler-Lagrange equations but if L=g_{u, v}x'^{u} y'^{v} = 0 along the null-geodesics how can we use the Euler-Lagrange equations?

>>7005498
>>7005511
The beer is supported/suspended, the guy just have a free moving arm attached to him, that and some video editing.

However the concept isn't invalid. But it's easier to do digitally manipulate away a support than get a beer stabilizer built.