On Saturday, June 16, 2012 3:12:44 AM UTC-5, Szczepan Bialek wrote:
In the pure vacuum are electrons. Do not you know about the Dirac electron
sea?

Yes, I know about it but Dirac nor anyone else who matters has claimed that electrons can travel at the speed of light. The thing that travels at the speed of light has been proven to be quantized, i.e. to consist of discrete packets or particles. It has been 84 years since Dirac came up with his theory. It is now generally accepted that Dirac's "sea of electrons" is made up of something other than electrons, i.e. dark matter/energy, in a quantum structure which results in the Casimir effect.

Here's the problem with a "sea of electrons" or virtual particles to explain the quantum structu

http://science.nasa.gov/astrophysics...s-dark-energy/

"But when physicists tried to calculate how much energy this would give empty space, the answer came out wrong - wrong by a lot. The number came out 10120 times too big. That's a 1 with 120 zeros after it. It's hard to get an answer that bad. So the mystery continues."