A superconductor is a material that achieves superconductivity, which is a state of matter that has no electrical resistance and does not allow magnetic fields to penetrate. An electric current in a superconductor can persist indefinitely. Superconductivity can only typically be achieved at very cold temperatures. https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcQHevPPPj8nV7dCBUL2mgJ9oqb8O8FN9NHpsw&s

Trời ơi! 😝😆❤️‍🔥  Cảm ơn anh đã tạo ra một không gian chia sẻ ý kiến! @viet16

  Ôi giời ơi! Cảm ơn vì mi luôn ở bên cạnh.