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What is the Meissner effect?
Quick Answer
The Meissner effect is the expulsion of magnetic fields from a superconductor when it becomes superconducting. It is one of the clearest signs of superconductivity.
The Full Story
When a material enters the superconducting state, it does more than just lose electrical resistance: it actively pushes magnetic fields out of its interior. This phenomenon was discovered by Walther Meissner and Robert Ochsenfeld in 1933. The Meissner effect is why superconductors can levitate above magnets in demonstrations. It is fundamental to the physics of superconductors and helps distinguish them from perfect conductors.
Key Facts
1.Discovered in 1933 by Meissner and Ochsenfeld
2.Magnetic fields are expelled from the superconductor
3.Enables magnetic levitation demos
YouTube Angle
Suggested video title for this topic:
"Why some materials can float above a magnet"
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