B茅 Ty 馃幁
@phuongthoa
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.
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LH 馃帺
@lehien
H么m nay huynh 膽茫 c岷 th岷 h岷h ph煤c kh么ng? Tr峄漣 啤i 膽岷 h峄! 馃挀馃き馃 @phuongthoa
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