New experiments challenge fundamental understanding of electromagnetism
The theory in question is known as quantum electrodynamics, or QED, which physicists have held in high regard for decades because of its excellent track record describing electromagnetism's effects on matter. In particular, QED has been especially useful in explaining the behavior of electrons, which orbit every atomic nucleus. But for all of QED's successes, there are reasons to believe that QED may not provide a complete picture of reality, so scientists have looked for opportunities to test it to ever-increasing precision.
Read more at: http://phys.org/news/2012-11-fundamenta ... m.html#jCp
Scientists always challenge or look for new ways to test current theories.