What, specifically, happens when a proton and an antiproton collide?

a reply to: Kashai


Is how we define the Universe a factor in calculating the numbers in question?

Is the only reason you feel the cup is half empty is because you want more water?

a reply to: micpsi


I do not have a problem but do you?

originally posted by: Kashai
a reply to: Bedlam

Could the entire mass of all photons in the Universe be applicable to curvature?

As well as pretty much else.

The universe is dark and cold, so the contribution from photons is very small.

According to standard cosmology there was a time, the first 10k years, when photons were dominant. It was too hot for matter to form.

a reply to: moebius


So in an Infinite Flat Universe there are finite number of photons?




Ok that was kind of funny


Why because of how we predict its age?

So the object that temporally and as a dimension that is effectively a structural construct in relation to that we call the Universe, has a point of origin?

Where is the center?

Writing in the journal Nature Photonics, the scientists describe how they could turn light into matter through a number of separate steps. The first step fires electrons at a slab of gold to produce a beam of high-energy photons. Next, they fire a high-energy laser into a tiny gold capsule called a hohlraum, from the German for "empty room". This produces light as bright as that emitted from stars. In the final stage, they send the first beam of photons into the hohlraum where the two streams of photons collide.

The scientists' calculations show that the setup squeezes enough particles of light with high enough energies into a small enough volume to create around 100,000 electron-positron pairs.

www.theguardian.com...

Yeah I am going to have more questions.....?