This is very basic research.. For example, string theory is more than forty years old and it still has no experimental confirmation, testable prediictions......
A fluid behaves like a superfluid only under a certain critical velocity; above this critical velocity, superfluidity disappears
That's because string theory (and any multi-dimensional theory) is full of crap. The idea about time being the 4th dimension is also misleading.
PhysicsLver21
Oct 27, 2010