Energy is the defining property of our physical world, and therefore the most important tool for understanding nature, hence the most commo...

Time is a special thing. It is always with us. We live in it. It surrounds us, we can't get rid of it. It seems to be part of the phy...

Many times, we explain natural impossibilities by mathematical impossibilities. It is true, that impossibilities in the mathematical form...

Unquestionably, E=mc2 is the most famous equation of physics. It states the equivalence of mass and energy, it states that they are inter...