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Greetings forum,I am sure many are aware of this event and the many questions around it The Large Hadron particle collide in Switzerland is to be switched on Wednesday with much speculation in the media (eg create a black hole that will swallow the earth nonsense.Hadron is just another word for Proton and these protons are going to be accelerated to as near as possible to the speed of light in opposite directionsThe question is if these particles are accelerate within a tad of light speed in opposite direction, would they then collide at greater than the speed of light??
What about the observer subject synchronised to the microwave back ground
Edit: Alan, to answer your question about the observer, they will observe each particle moving (relative to them) at nearly c. The relative speed they will measure between the two particles to be almost 2c, and that's fine. You are not seeing anything moving at greater than c relative to you at any point in this process, and that's what counts!
RichardA warm welcomeStrangle if they were receding from each other at 99.9 C they would see that, if of course given they could observe and calculate thatRegards