What is a gravitational wave weapon?

Sina Technology News Beijing time 65438+February 23 news, according to the British "New Scientist" magazine, if you think that gravitational waves can propel starships, it sounds like science fiction, then you will find that you are not alone. Because any astrophysicist is dismissive of this statement. However, this does not prevent the US Defense Intelligence Agency (DIA) from entrusting relevant departments to continue to investigate whether the elusive gravitational waves may pose a threat to US security.

The US Defense Intelligence Agency also asked Jason's defense advisory team to determine whether this high-frequency gravitational wave can be used to draw images for the center of the earth or for remote communication. Gravitational waves are "ripples in time and space" caused by the motion of massive celestial bodies such as very dense stars. However, even the "space-time ripple" caused by the huge star movement is so weak that most sensitive detectors can't find it at all. The best evidence to prove the "ripple of time and space" is obtained indirectly by observing how the energy of super-dense double neutron stars is lost.

The National Defense Intelligence Agency asked members of Jason's research team to seriously consider a funding proposal submitted by American company GravWave. The application claims that humans can use the Gertsenshtein effect to generate powerful gravitational waves on the earth. The application also describes how electromagnetic waves are converted into gravitational waves by a very strong magnetic field. However, when Jason's research team did mathematical calculations, the results were not conducive to the supporters of this design. Facts have proved that the efficiency of this method is very low, and it takes every power station on the earth a lifetime to generate a gravitational wave with only one millionth of joule energy. The current required to accelerate a spaceship to a speed just exceeding the gravity of the earth, that is, the speed of 10 meter per second, is 1025 times of the total current output in the world. The report concludes: "These suggestions belong to pseudoscience, not science."

To physicists' surprise, a committee needs a 40-page report to reach a conclusion. Carsten Danzman, a member of the GEO600 project who discovered gravitational waves, said, "This proposal is completely nonsense. To my great surprise, the bureau was too lazy to entrust other institutions to conduct research. I think they can ask the scientific adviser in the bureau. " David shoemaker of Massachusetts Institute of Technology in Cambridge, Massachusetts, USA is a member of LIGO project to discover gravitational waves. He admitted that a phone call to a physicist could solve the problem.

However, he believes that given the history of American military institutions subsidizing bad science, it may not be a bad thing for the report to derogate from this early idea. He said: "There are always several ongoing projects of the Ministry of National Defense that violate the thermodynamic convention, so I hope they can entrust relevant departments to conduct more in-depth research on these aspects."

In the mid-1990s and early 20th century, the Pentagon spent millions of dollars to develop something similar to a nuclear weapon, which was called a hafnium bomb, but this research proved to be based on pseudoscience. Therefore, compared with this incident, it may be a good "investment" to spend money on writing reports and avoid wasting money on developing gravitational wave weapons. (Qiu Ling)