Physicists are improving technology that was previously considered fantastic It seems that the researchers have finally revealed the secret of the trick, which, according to eyewitnesses of UFOs, use aliens.
Namely, they release a ray from the "flying saucer" and draw anything they want inside. For example, people and animals are abducted. This technology is actively used in science fiction films, depicting both aliens and advanced earthlings of some 21st century.
In 2011, Chinese scientists - Jun Chen from Fudan University in Shanghai, China, with colleagues from Hong Kong, Denmark, Singapore and the United States proved that the "alien trick" is by no means supernatural. And with a beam - specifically a laser - you can really attract objects to the source of the beam. That is, to the laser.
The Bessel ray, which earthly physicists turned into an attractive one, looks like concentric circles in section
According to scientists, the opposite effect to the well-known effect occurs - the pressure of light, on the basis of which solar sails operate. To pull in, however, requires a special laser - Bessel, which creates Bessel beams. They have a special structure of peaks and troughs. And in cross-section, such a ray resembles concentric circles. And most importantly: the photons in it move at an angle to the direction of the beam itself.
Last year, scientists argued: if a specially organized Bessel beam is directed at an angle to an object, then a force will appear directed in the opposite direction. And the object will begin to move towards the radiation source. Yun Chen admits that it is still a long way to move large objects (like aliens). And we are talking about manipulating objects with a size of a fraction of a millimeter. Chen's group failed to test their theory in practice and to draw in at least some trifle. Very complicated settings were required.
But this year, Professors David B. Ruffner and David G. Grier of New York University co-opted the trick. What they reported in Physical Review Letters in Optical Conveyors: A Class of Active Tractor Beams. The Americans also used Bessel beams, but according to a different scheme - simpler, as it seems to them. Rafner and Grier applied two beams, superimposing them on each other, changing the strength and phases. Likewise, according to the professors, you can grab objects and move them in any direction you want.
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Will it ever come to moving large objects? So straight, like aliens? The Americans do not deny this perspective. But they emphasize that it will take a lot of energy.
“We were contacted by NASA,” Ruffner said. - We were interested in whether it is possible to place a device with a tractor beam on board a spacecraft in order to get, for example, dust particles from a comet. We answered that it is possible, but not soon.
By the way, NASA has other ideas about the use of attractive rays. For example, to clear space from space debris. Or pick up astronauts who have flown away from space stations.
