text: it is possible to change the civilisation if we get a superconductor at room temperature,is it possible? how can we actually get a super conductor at room temperature? actually there is no superconductor at room temperature(at least at this time being).  have u ever heard about ohm's law ohm's law stated that the voltage(v) is equal to electric  current(i) and resistance(r)                  v=ir if we manipulate the law, we get                  r=v/i  it means that we cannot have voltage and current without having resistance.  we don't want the resistance bcoz we didn't want to waste the voltage. in other word, material with high resistance is called insulator and the ones with low resistance is called conductor. we know electric can't pass trough insulator becoz it dont conduct electric. unfortunately, all material in the universe have resistance. wood n plastic have resistance so they cannot conduct electric. metals such as cuprum, iron n so on also have resistance but in lower scale. therefore it can conduct electric but it also waste electric in form of heat. so everyday when we use elecrical gadjets we waste some electric.  superconductor is the material that has 0 or as low as achievable resistance. scientists find out that the lower the temperature the lower the resistance. so we can have 0 resistance at 0 kelvin or -273.15 centrigate.  scientists have managed to find a combination of materials that can act as superconductor above 0 kelvin(or above -273.15 centrigate). i'm not remember but i think it is -100 something, centrigate. but until right now, no one has manage to find the right combination of materials to make superconductor at room temperature.   should we manage to make one, the whole world will get the benefits from it. imagine a world without elecrical power crisis and computer that can process much much faster than today n the elecric gadjets that use low power, lower than  any weakest battery in the world today. what it would be?  until then, we can only use slow computer to log on to yahoo!answer.. haha..