Donald Trump's recent rant at an Iowa rally shows that he sadly won't be able to tell you. The rock-rap duo Insane Clown Posse posed that very question in their "Miracles" single in 2009, as they took ...

Magnetic fields applied in parallel to ultrathin films increase the critical temperature for superconductivity, which can't be explained by current theory.

The magnet is the characteristic substance that draws in the ferromagnetic material like iron or nickel by the force of attraction. Individuals depend on magnets for industrial and commercial use.