Magnetic Materials have also been widely used in the military field. For example, ordinary sea mines or land mines can only explode when they touch the target, so their effect is limited. And if magnetic sensors are installed on mines or landmines, because tanks or warships are made of steel, when they approach, the sensors can detect changes in the magnetic field causing the mines or landmines to explode, increasing the lethality.
In modern wars, air supremacy is one of the keys to victory in battles. However, the aircraft is easily detected by the enemy's radar during the flight, which is very dangerous. In order to avoid the detection of the enemy radar, a special magnetic material-a Powerful Magnet can be coated on the surface of the aircraft, which can absorb the electromagnetic wave emitted by the radar, so that the radar electromagnetic wave is rarely reflected, so the enemy radar cannot detect the radar echo. Can not find the aircraft, which makes the aircraft achieve the purpose of stealth. This is the famous stealth plane. Stealth technology is currently a hot spot in the field of military scientific research in the world. The American F117 stealth fighter is an example of the successful use of stealth technology.
In the US Star Wars program, there is a new type of weapon electromagnetic weapon development research. Traditional artillery uses the thrust generated by the instant expansion of the ammunition to rapidly accelerate the projectile and push it out of the barrel. In the electromagnetic gun, the shell is placed in a solenoid and the solenoid is energized. Then the magnetic field generated by the solenoid will generate a huge impetus to the shell and shoot the shell. This is the so-called electromagnetic gun. There are similar electromagnetic missiles.
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