Superconductor

Superconductor is one of the most fascinating features in physics. This concept allows a bullet train to float a few milimetre on its rail, causes less friction to make it moves at 'super' speed. However we're unlucky coz in SPM we wont study abt it in detail.If u wanna pursue your career in electronis,electrical or mechanical engineering.. i think its good to be exposed about it as early as possible.


To understand superconductor, u must understand the word conductor itself. Conductor is like a wire which can conduct electricity. Usually a wire has resistance. Resistance comes from the word, 'resist'..i.e it resists the flow of electrons or current. Different wires has different resistance.But bear in mind, not all conductors are wires.


So..how about superconductors?? 


Under low temperature, the resistance of a conductor decreases. But under extremely low temperature, some conductors has almost NO resistance...i.e it has ZERO resistance. If this condition is achieved, the conductor now has transformed itself into Superman :) ops!!...it supposed to be SUPERCONDUCToR.


Kalau nak senang faham..bayangkan superconductor ni mcm sebatang highway ..
Tapi katakanlah highway tu sekarang bapak u yang punya :)
So bila hari raya, disebabkan highway PLUS tu bapak kita yang punya. So kalau u jalan kat highway tu takde siapa pun yg nak kacau..takde traffic jam..takde polis...i.e takde apa2 halangan. Kalau u nak main skateboard kat situ pun boleh :) 
Senang citer kita kata highway tu takde "resistance". (ZERO RESISTANCE)


Kalau nak tau lebih detail pasal superconductor ..Wajib tgk video2 ni!!