Recent content by Evert

Thanks for clearing that up for me, the information available to me at school is, as I expected, wrong. So when a photon forms these particles off the mass shell, does it do this constantly? I mean does it happen (significantly enough) with visible frequency light, or do you need gamma radiation...

What is the meaning of the uncertainty relationship then? I thought the uncertainty about the energy could make you say you have 'enough' energy to create an electronpositron pair, without actually having that when time is more uncertain?

I mean Heisenberg uncertainty relation, can't it violate the conservation of energy for a short amount of time, to form virtual electron positron pairs? I guess i forgot to mention virtual.

Hello physicsforum, As the topic name says, I would like to know if a photon forming electron-positron pairs spontaneously could or does affect it's speed. Correct me if I'm wrong, but photons do form these pairs (and heavier?) even without the correct amount of energy, right? And if they do...

As far as I get it, Planck length should be measured everywhere in the universe as the same length. (It contains constants so it stays constant right?) So for every observer, nothing happens at scales smaller than Planck length? So particles appear at 1 spot, disappear for Planck time, and show...

How is it possible that the Higgs boson interacts with itself? Now that it is almost certainly discovered, how can a particle that gives mass to other particles, give mass to itself? Does it make a 'loop' with other Higgs bosons? How can the Higgs boson interact with other particles in such...