Magnetic fields are elusive spirits or demons in the universe, depending on how you use it.
When we use it to produce various components for the benefit of mankind, it is a genie;
When it throws solar flares at the earth, causing great disaster, it is the devil.
Of course, we are not often intimidated by the devil, but often enjoy the gifts of the elves, so the magnetic field is still very beneficial to us.
Shojiro Takeyama, a mad scientist at the University of Tokyo in Japan, decided to create the strongest controlled magnetic field in human history in order to study solid-state physics.
The previous record was created by more mad scientists in Russia, who created a super magnetic field with a magnetic field strength of 2800T (Tesla), hundreds of millions of times the strength of the geomagnetic force.
However, the Russian scientists were very crazy, directly using TNT explosives for compression, and the equipment was immediately destroyed, so it was completely uncontrollable.
Shojiro Takeyama's team used electromagnetic magnetic flux compression (EMFC) to connect instruments capable of generating a 3.2 T low-intensity static magnetic field to a row of capacitors that produce enormous amounts of energy — energy up to 3.2 megajoules, which would instantly compress the magnetic field to an extremely small area at a speed of 32,000 km/h, involving an electric current of 4 million amperes, thousands of times that of lightning.
However, the experimental device cannot maintain this compression state for a long time, and will eventually rebound and explode. The investigators calculated that the experiment might generate a magnetic field of 700T, and in order to avoid explosions and injuries, the laboratory was transformed into a thick iron cabinet.
As a result of this crazy experiment, the researchers accidentally created a magnetic field of up to 1200T and maintained it for a record 100 microseconds — about one-thousandth the speed at which a person blinks.
However, the newly designed iron cabinet can only withstand the magnetic field of 700T, and the shock wave generated by the explosion instantly blows the door away.
So how powerful is the 1200 Tesla magnetic field? I'm afraid no one knows, but I can provide a few examples:
The magnetic field of a refrigerator sticker is about 0.001T;
A large 30-pound megaphone with a magnetic field of 1T;
The hospital's MRI imager, which is about 3T;
Sunspot magnetic field strength, 10T;
One frog suspended in the experiment, 16T;
Neutron star, 1 million T, theoretically up to 10 trillion T.
Shojiro Takeyama said that since the laboratory explosion did not cause casualties because it was fully prepared, they will continue to study, preparing to raise the energy to 5 megajoules, generating a magnetic field of 1500T.
Shojiro Takeyama also said that as long as a stable magnetic field of more than 1000T is made, it will become a milestone in physics, and the wonderful phenomenon of electrons moving outside the material can be observed;
Using this magnetic field, scientists can also develop nanoscale components;
The tokamak device for nuclear fusion also requires thousands of Teslas' strong magnetic field to sustain a few microseconds, and this study could also help.
Stay tuned: