The video explores the world's strongest magnet, a 45 Tesla electromagnet at the National High Magnetic Field Laboratory in Tallahassee, Florida. The magnet is capable of generating an incredibly powerful magnetic field, nearly a million times stronger than the Earth's magnetic field. It consists of an outer superconducting magnet and an inner resistive magnet, which work together to achieve the high field strength.
The video demonstrates the magnet's effects on various objects, including a Nerf football with steel washers, ferrofluid, and non-magnetic materials like aluminum and copper. It also shows how the magnet can levitate objects using induced eddy currents and diamagnetism.
The video also explains the science behind the magnet, including the concept of Lenz's Law, which describes how a changing magnetic field induces electric currents in conductors. It also discusses the properties of superconductors and how they can be used to create powerful magnets.
Additionally, the video explores the potential applications of such powerful magnets, including the development of new materials and the improvement of existing ones. It also touches on the challenges of creating and operating such powerful magnets, including the need for significant amounts of energy and the potential for material failure.
Overall, the video provides a fascinating look at the world's strongest magnet and its potential applications in science and technology.
Here are the key facts extracted from the text:
1. The world's strongest magnet is capable of generating a magnetic field of 45 Tesla.
2. The magnet is located at the National High Magnetic Field Laboratory in Tallahassee, Florida.
3. The laboratory has held the Guinness World Record for the strongest continuous magnetic field since 2000.
4. The magnetic field of the Earth is 0.00005 Tesla.
5. A fridge magnet is around 0.01 Tesla.
6. MRI machines can generate a magnetic field of up to 3 Tesla.
7. The magnet consists of an outer superconducting magnet and an inner resistive magnet.
8. The apparatus is two stories tall, but the maximum field only occurs in the center of a narrow cylinder.
9. The magnetic field is so strong that it can levitate non-magnetic objects and wreak havoc on camera equipment.
10. The magnet is powered by 47,000 amps of current and 500 volts.
11. It takes around an hour and a half to ramp up the magnet to full power.
12. The magnet's fringe field, which extends beyond the magnet, is weaker but still dangerous.
13. Materials that conduct electricity fall slower in a magnetic field due to induced eddy currents.
14. The induced eddy currents create their own magnetic field that opposes the change in flux, known as Lenz's Law.
15. Ferromagnetic materials are attracted to magnetic fields, while non-ferromagnetic materials are repelled.
16. Diamagnetic materials, such as water, are repelled by a strong magnetic field.
17. Para magnetic materials, such as oxygen, are attracted to magnetic fields.
18. Superconductors can levitate in a magnetic field due to induced currents that oppose the change in flux.
19. The world's strongest magnet is not safe for living things, but there are no lasting effects.
20. The magnet's failure can be expensive, with a single failure costing around $250,000.
21. The Mag Lab uses a significant fraction of Tallahassee's electricity, with an electricity budget of around $250,000 to $300,000 per month.
22. The lab operates in the federally mandated reserve, which every utility has to have, to push into the grid in case of a problem.
23. The lab has a deal with the city to make money off the power they produce but can't sell.
24. The lab can ramp down faster than the utility can spin up a generator.
25. Researchers need 45 Tesla to put materials in an extreme environment to drive material discovery.