= Unsolved physics problem
{wiki=List_of_unsolved_problems_in_physics}
The most important ones are:
* <theory of everything>{child}. We are certain that our base equations are wrong, but we don't know how to fix them :-)
* <Grand Unified Theory>{child}
* <strong CP problem>{child}
* full explanation of <high-temperature superconductivity>{child}. <Superconductivity> already has a gazillion applications, and doing it in higher temperatures would add a gazillion more, and maybe this theoretical explanation would help us find new high temperature superconducting materials more effectively
* <fractional quantum Hall effect 5 2>
Other super important ones:
* <neutrino> mass measurement and explanation