[SOLVED] vacuum fluctuation I have a few questions about this topic. 1. If their is build energy in vacuum (from Heisenberg's uncertainty principle), for example: build: 10 J ==> here for: d(t)=h/(4pi)/10J There must be built a particle and an anti particle ==> particle has 5 J and antiparticle 5 J Is that right? Is the particle at same place like the antiparticle (while life time) or how do they disappear? Casimir effect: Why is there a force? (I mean, in the middle there are high energy waves and outside there are low energy waves, but why is there a force)? And if there are high energy waves in the middle of the plates and outside low energy waves, from where take the high energy wave the energy?