"The electron that scientists see in the laboratory-the electron that physicists, chemists, and engineers have known and loved for decades-is an impostor. It is not the true electron. The true electron is hidden in a shroud of particles, made up of the zero-point fluctuations, those particles that constantly pop in and out of existence. As an electron sits in the vacuum, it occasionally absorbs or spits out one of these particles, such as a photon. The swarm of particles makes it difficult to get a measurement of the electron's mass and charge, because the particles interfere with the measurement, madking the electron's true properties. The "true" electron is a bit heavier and carries a greater charge than the electron that physicists observe."