beginning of matter

[Ankit Gupta]

When big bang happened our universe had created and at that time there was no matter but only energy , will any one explain then how matter was formed from it ?

 

 

And at that time what energy looked like I mean in empty universe how can u tell that here is energy and this is energy , was energy present as sort of some particle or something else ?

[swansont]

Mass is a form of energy, and forming matter/antimatter pairs is something that's been observed. Why there is so much matter and relatively little antimatter remains one of the big unanswered questions.

[Ankit Gupta]

But as we can say by seeing an object that it has some mass and we can see it but why can't we say same about energy that there it is , it is energy . is energy is also quantized

Mass is a form of energy, and forming matter/antimatter pairs is something that's been observed. Why there is so much matter and relatively little antimatter remains one of the big unanswered questions.

may be there also two or more forms of energy and the energy that is present in our universe , it is favorable for it to make matter not antimatter therefore the antimatter formed decomposes instantly

[swansont]

But as we can say by seeing an object that it has some mass and we can see it but why can't we say same about energy that there it is , it is energy . is energy is also quantized

 

Energy is a property, not a substance.

 

may be there also two or more forms of energy and the energy that is present in our universe , it is favorable for it to make matter not antimatter therefore the antimatter formed decomposes instantly

As I said, it's an unanswered question. These things have not been observed.

[Ankit Gupta]

Energy is a property, not a substance

property of what ! Matter !

[swansont]

property of what ! Matter !

 

Yes. A property of matter (also of fundamental bosons), but not matter itself. There is no particle that has the property of energy and only energy.

[Ankit Gupta]

Yes. A property of matter (also of fundamental bosons), but not matter itself. There is no particle that has the property of energy and only energy.

i didnt understand

[Schneibster]

Energy can be light which has no mass (though it has momentum). It can also be the twisting or stretching of a rubber band (which are in different parts of the stress-energy tensor).

 

When the universe was first formed as we see it now, after the vacuum fluctuation and inflation, when the inflaton dumped its energy into the newly created universe and the Big Bang happened everywhere, there were all kinds of particles, but they were all in equilibrium. With such a high energy density, each particle lasted only a fraction of a nanosecond before it met an antiparticle and annihilated back into energy. But as the universe cooled, the particles started to last longer, and some of them were matter fermion particles like quarks or leptons, not energy boson particles like photons, colored gluons, or W and Z particles. Eventually the quarks mostly decayed into up and down quarks, and the leptons (except neutrinos) decayed into electrons. Why the up and down quarks were favored over antiups and antidowns is, as swansont intimates, still a matter of controversy among physicists. But that's what happened, beyond a shadow of doubt; everyone agrees on that, because it's what we've measured.

 

Once it had then all the newly formed nucleons (neutrons and protons, respectively two downs and an up and two ups and a down) associated with electrons and became atoms.

 

Then, because the pressure and density and temperature were still so high, about 1/4 of the hydrogen fused into helium (and incidentally also into a very small percentage of lithium, which is important because it indicates the exact conditions under which this all happened, as does the exact percentage of helium created).

 

The rest of the elements have been cooked up in the cores of stars, then spread across the universe by supernovae and by the enormous plumes of superheated gas that we have been recently observing connecting the galaxies, and galaxy clusters, and surrounding the superclusters of galaxies, that make up our universe.

 

I think this is a Pretty Good answer to your question, "where did matter come from."

[michel123456]

i didnt understand

I like you honesty. + for that.

Be sure no-one deeply understands.

 

-------------------

as much as I know, energy is relative.

 

Kinetic energy for example.

 

Wiki statement here below

Like any physical quantity which is a function of velocity, the kinetic energy of an object depends on the relationship between the object and the observer's frame of reference. Thus, the kinetic energy of an object is not invariant.

 

Which means it is relative.

Edited April 26, 2014 by michel123456

[PeterJ]

Schneibster - Your answer says that matter appeared in the universe, and that explains how it appeared in the universe. How is that a 'pretty good answer'?

[Endy0816]

Gray = Banned

[Delbert]

When big bang happened our universe had created and at that time there was no matter but only energy , will any one explain then how matter was formed from it ?

Undoubtedly the universe appears incomprehensible to us who think things are really solid. An atom is apparently mostly empty space. I understand that if an atom of (say) hydrogen is enlarged to the size of Wembley Stadium (UK), the nucleus would be a walnut with the electron smaller than a grain of sand in a probability cloud at the farthest reaches of the stadium. And the nucleus probably isn't solid either (quarks whizzing around in a probability dance, I understand), and therefore mostly empty space. Substances feel solid (to us who are made of similar 'stuff') because I understand the effect of the electrical force. So perhaps what we call matter is probably an interaction of what we call a force or forces (energy) in a never ending dance.

Edited May 8, 2014 by Delbert