A physicist from Israel claims that movement can appear "out of thin air".
Philip Ball, Nature (translation: Dikla Oren)
Physicist: The vacuum can make objects move.
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Alexander Feigel from the Weizmann Institute of Science in Rehovot says, trees can achieve a speed of up to several centimeters per hour by the push that the vacuum gives them.
No one has yet measured the speed of a body driven by the vacuum, but Feigel estimates that, theoretically, this effect can be used to divert small amounts of liquid from their path in chips in a laboratory, for example. Such small-scale experiments may prove useful to chemists, who want to test thousands of drugs at once, or to forensic scientists, who are testing very small amounts of substances.
The idea of creating a movement from nothing sounds like a gift to the followers of the "Perpetum Mobila" machines. However, there is nothing in Feigel's theory that violates the fundamental laws of physics. If so, it does not provide a way to cheat the universe and obtain free energy.
Instead, Feigel is based on the accepted concept, that the void does contain a small amount of energy. This "vacuum energy" is a result of the uncertainty principle - a principle that is one of the foundations of quantum mechanics.
The uncertainty principle means that subatomic particles or photons can appear spontaneously in a vacuum - to the extent that they disappear quickly. The constant creation and destruction of the virtual particles fills the void with a small amount of energy.
Feigel calculated the effects of virtual photons on the momentum - a quantity defined as mass multiplied by speed - of objects in a vacuum and reached surprising conclusions.
His starting point was the fact that photons, flying between particles, are the mediators of the electric and magnetic forces. It is possible, therefore, to look at an object that is in strong electric and magnetic fields, as immersed in a sea of these virtual and temporary photons.
Feigel then showed that the momentum of the virtual photons, which appear to them in a vacuum, can depend on the direction of their movement. He concluded that if the electric field points up, and the magnetic field points north, for example, photons moving east will have a different momentum than photons moving west.
In such a case the void acquires momentum in one direction - as if the void is moving in this direction, even though it contains nothing.
One of the basic principles of physics is the conservation of momentum - if something moves in one direction, something else must move in the other direction, like a rifle recoils when it fires a bullet. If the void has momentum as a result of these virtual photons, an object in that void begins to move in the opposite direction.
Feigel estimates that in an electric field of 100,000 volts per meter and a magnetic field of 17 tesla, quite large values but achievable with the technologies that exist today, an object even with the density of water will move at a speed of about 18 centimeters per hour.
Link to the original article in Nature
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