what is singularity?

Answer 1

singularity is a math concept -- it does not exist in nature

Singularity is where our theory breaks down (say in a formula where you have a division by zero) It does not mean something wrong is going on in the real world

It is simply a limitation of our present model about nature

Some physics theories know how to avoid them as in Quantum Field Theory. In some other you may hear about "naked" singularities meaning they are unavoidable.
Maybe in future we will know how to treat them.

Answer 2

A singularity in geometry is a place where an object fails to be smooth. For example, a cone is smooth everywhere except at the apex. We would therefore say that the cone has a singularity at this point.

In general relativity, space-time is regarded as a smooth geometric object (a manifold to be precise). In this setting, I believe that a singularity in space-time would be a region where this smoothness broke down.

Answer 3

A singularity is at the center of a black hole. The event horizon is where the escape velocity of a black hole reaches the the speed of light, so nothing can escape. The singularity is where theoretically, matter becomes infinitely dense they believe, but they don't know much about it yet.

Answer 4

A singularity is one helluva spooky concept. In terms of astronomy, and particularly cosmogony, a singularity exists where space-time is curved completely back on itself due to immense gravity. You'll sometimes see a singularity also described as infinite mass occupying zero volume. I'm sure others responding to your question will have additional definitions.

Answer 5

The singularity is the universe before the "Big Bang". It is the when and where all of the mass and energy of the universe is condensed in one place. This is called, in cosmology, the singularity. Everything in one place.

Answer 6

Singularity in physics is a theory in the black hole.
According to the theory,when you approch a black hole gravity become stronger and when you pass the boundary of the black hole even light cannot escape it.Gravity continues to grow in the black hole until it reaches infinity (that what physicists call singularity because it is beyond the reach of explaining it by formulas).

Answer 7

Singularity is a cosmological theory describing the universe before it existed, before the big bang. Essentially, all mass existed in a single point infinitesimally small but very heavy (becuase it contained all the mass).

Answer 8

A singularity is a subatomic particle with the mass of a star. It's a "string" or a "Planck pocket" that has become hyperextended in the dimensions of mass & energy, which means it has become so curved in spacetime that quantum probability dominates the behavior of spacetime near them, rather than the usual causal rules of thermodynamics.

Answer 9

well my name means "event horizon" or "piercing star" in Arabic, so ha ha (which also means singularity too :P)
but really, we know nothing of such an amazing phenomena we can only speculate on what truly happens inside it, off course the infinite nature of things in the universe from atoms to the universe itself might give us a clue but iam sure that some day in the future someone will go there and figure it out.

Answer 10

I thought it was a cell phone company - who knows.


Actually, a singularity is believed to be the single object that set the big bang into motion.