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Scientists Create The Most Powerful Magnet In The World: 800 Thousand Times Stronger Than The Earth’s Magnetic Field Promises Technological Advances In Medicine, Metallurgy And Electronic Materials
Imagine a device so powerful that its magnetic strength exceeds 800 thousand times the Earth’s magnetic field. It sounds like science fiction, but it is real and has been achieved by scientists from China. The new resistive magnet developed there has set a world record by reaching an impressive 42.02 teslas, surpassing the limit previously held by the United States since 2017. And it is not just a technical curiosity: this advancement could change the game in areas such as nuclear fusion, quantum computing, medicine, and particle physics.
An Unprecedented Magnetic Field: 800 Thousand Times Stronger Than Our Planet’s
To grasp the magnitude of this achievement, it’s important to understand what a tesla is. It is the unit of measurement for the intensity of a magnetic field. The natural magnetic field of the Earth, for example, varies from 25 to 65 microteslas, which is equivalent to only 0.000025 to 0.000065 teslas. In other words, the new Chinese equipment has a field 800 thousand times stronger than that of our planet.
This super magnet was created at the High Magnetic Field Laboratory of the Hefei Institute of Physical Sciences in China. According to the official website of the institution, the project had been in development for years, with many tests, adjustments, and even some failures, such as when, in 2018, an attempt failed and caused part of the laboratory to explode.
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A New Record For Global Science
Until recently, the record for the most powerful magnetic field generated stably by a resistive magnet was 41.4 teslas, achieved by researchers from Florida State University in the United States in 2017. To accomplish this, they used equipment consuming 32 megawatts (MW) of energy, an enormous amount equivalent to more than 40 Formula 1 car engines running together.
Now, the Chinese have surpassed this mark with a practically equal consumption of 32.3 MW, achieving 42.02 teslas with stability. For experts in the field, this represents a historic feat. According to physicist Zhang Xin, a member of the Hefei team, “this advancement positions China at the forefront of research in extreme magnetic fields with direct application in future technologies.”
But What Is A Resistive Magnet?
Unlike permanent magnets or superconductors, resistive magnets are electromagnets made from metals like copper and aluminum, which generate heat when conducting electricity. Therefore, they usually operate with powerful cooling systems and, in many cases, require temperatures close to absolute zero (–273°C). Despite these limitations, they are extremely useful for generating intense magnetic fields in a controlled and continuous manner, something essential for high-complexity experiments.
What Is A Strong Magnetic Field Used For?
This race for extreme magnetic fields is not just a competition among superpowers. These magnets are essential for the advancement of critical technologies. One of the main uses is in particle accelerators, like the famous Large Hadron Collider (LHC) in Switzerland. China is even investing heavily in its own collider, the CEPC (Circular Electron Positron Collider), and this advancement in the magnetic field is directly linked to the feasibility of the project.
Additionally, resistive magnets are used in:
- Nuclear Magnetic Resonance, both in medicine and chemical research;
- Positron Emission Tomography, a fundamental technique in the diagnosis of cancer and other diseases;
- Plasma Confinement in research on nuclear fusion, a potential source of clean and unlimited energy;
- Studies of superconductivity and new materials, which could lead to the creation of even more powerful computers;
- And even in the emerging field of quantum computing, which depends on extreme conditions to manipulate quantum bits.
China vs United States: A New Scientific Frontier
This advancement places China once again at the forefront of technological disputes with the United States. The supremacy in creating scientific equipment of this magnitude is seen by many analysts as a thermometer of the future. Just as it happens in the space race and with supercomputers, labs are now competing to see who creates the most powerful and efficient magnet in the world.
For physicist Andrew D. Kent from New York University, “the dominance of intense magnetic fields represents control over cutting-edge technologies. And what we see now is a clear shift in the axis of global scientific leadership” — statement made in a recent interview with the New York Times.
The Revolution Has Already Begun — And Is Magnetizing The Future
With this new record, China has dethroned the United States and opened a new path for experiments that were once considered impossible. The creation of such an intense and stable magnetic field elevates science to another level and brings promising prospects for those dreaming of advancements like fusion energy, more precise medical diagnostics, and ultra-advanced computers.
What about you, did you ever imagine that a magnet could change so much in the world? Leave your comment below, share this content with your friends, and follow our updates for more discoveries that are shaping the future of science!
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