Big bang, impossible because............

Question

I think the big bang theory is impossible because it says that matter can be crushed to an incredibly small size, however the force that holds atoms apart and together is the electromagnetic force, and every one knows how much stronger that is than gravity. (just look at a magnet) am i right or not?

Answer 1

A wee bit right!..Certainly given sufficent mass (about three solar masses) a neutron star can be compacted to a very small object (singularity) with a given Scwartschild radius beyond whose boundary light cannot escape. But remember that acording to the HU principle as the spatial dimension decreases, the avaiable energy of the matter so confined increases. When you compress down to about 10^-35m, I predict the 'singularity' defaults to a 10 dimensional object as it is subsumed within the other 7 curled up spatial dimensions. It would take infinite mass to compress it further. A bit like as you approach the speed of ight the amount of energy required to acceler8 an object> infinity

Answer 2

     Now according to your question big bang theory is immposible but i say that it is possible because if you take an aton it revolves around the nucleus as the planets and heavenly bodies revolve around the sun so even though the matter is crushed into small particles still due to the strong gravitational pull of the sun they revolve according to there time periods and in orbit so i say that the theory of big bang is surely possible  

Answer 3

Its my understanding that the laws of Physics only came into being after the big bang so it is entirely plausible for the big bang to have occured the way it has been described.

Answer 4

The Big Bang theory is completely plausible and mathematically sound, you must understand that at the beginning of the universe, there was NO MASS, no molecules, no atoms, no protons, no neutrons, JUST ENERGY, this means that it can be forced down to any size you care to think of without any problems. How this energy got to be so compacted is something we have yet to understand, the high temperature during and just after the big bang means that we can't work back to see what was going on before the Big Bang.

On a separate point, the nucleus is held together by the strong nuclear force and not the electromagnetic force, this just holds the electrons in orbit.

Answer 5

After studying a-level physics last year, i understand that atoms aren't held together by an electromagnetic force, as this would cause problems with the electrons and photons.

I was taught that the force holding the atoms together is refered to as 'the strong nuclear force'.  I may be wrong but this force varies with distance inversely, and then it reduces.

try wikipedia.

Answer 6

Sorry, not.

Your basic reasoning is incorrect.  All large accumulations of matter are more or less electrically neutral, so that limits how strong electromagnetic forces can be.

But if you get enough matter sufficiently close together, you can generate gravitational forces far greater than any other forces, stronger even than nuclear forces let alone electromagnetic.  That is how neutron stars and black holes are possible.  If you don't know about these, look them up.

Answer 7

The four fundamental forces in descending order of strength are strong nuclear, weak nuclear, electromagnetic and gravity. Which on the surface would suppose you to be correct in the assumption that gravity could not overcome the others. However the forces in descending order of range are gravity, electromagnetic, weak and strong nuclear. So put enough mass together and the gravity keeps on pulling from one edge to the other first overcoming the electromagnetic and weak nuclear forces (operating at much shorter ranges) which is holding atoms apart and electrons orbiting their nuclei and collapses them to a dense clump of neutrons, a neutron star is born. Put in sufficiently more mass and gravity keeps crushing the neutrons together until even the immensely strong but very very short range nuclear force is overcome and the clump of matter  collapses beyond an event horizon to form a black hole.

Answer 8

Firstly as mentioned ^ atoms are electrically neutral, so electromagnetic forces dont play a large role on the macro (large) scale of the universe. You are correct in your statement that the EM force is stronger than gravity, but it acts over small distances whereas gravity is weak but acts over large distances.

Also the strong nuclear force is actually what binds the particles of a nucleus together and is far stronger than the EM force but only acts over small distances.

The force responsible for matter not spontaneously splitting into particles is the strong nuclear interaction, the EM force influences atomic bonding.

And the big bang doesnt state that matter can be crushed to a small size, it postulates that our universe originated from a point or singularity, it doesnt state that it had to be crushed in the first place, however some people do believe that what started the big bang was the singularity left over from the big crush of our last universe.

Also the above answer is correct, if mass is concentrated into a sufficiently small volume, (such as a black hole or dense star) then the gravitational force will overcome EM and the strong nuclear interaction.. not even light can escape the event horizon of a black hole.