Question: how do you see the protrons are they blured or are they in detail?

Flavia de Almeida Dias answered on 7 Nov 2015:

Hello!

The short answer is “blurred”, and not like a static picture of it. We can describe the constituents of the proton (quarks and gluons) by probability functions, but we can never draw their constituents and say “that is how a proton look like at a given time”.

Now, for the long answer:
We don’t “see” protons, as in an image in a camera, in colliders such as the LHC. However, the way we “see” it is to check how it interact with other particles – in other words, smash it into other things! There are two types of smashing we can do to a proton to probe how it looks like: one of them is smashing it against something else, but without breaking its structure (is what we technically call a elastic scattering), like we do when we are playing pool and hit a colourful ball with the white ball. We then measure where the proton likes to go after been hit, and this tells us information about it. The second way is to smash in a way that we get one of the proton constituents (quark) knocked out, and the proton then gets broken into many fragments (this method is called a Deep Inelastic Scattering). This second method allows us to extract what we call Parton Distribution Functions – which are the probabilistic distribution of the quarks and gluons which constitute the proton – but because of quantum mechanics nature of very small particles, we can never know for sure where a quark is inside a proton, we can only describe what are the probabilities.