The reconciliation of general relativity and quantum mechanics is one of the biggest challenges in science, one that ...

In this quiz, discover the answer and explore other examples of what scientists call mass-energy equivalence.—Susan K. Lewis 1. The mass of a small paper clip (.03 ounces) has the energy of: ...

The following are a few of the key scientists who helped lay the groundwork for Albert Einstein's incredible insight into the equivalence of energy and mass. Facing the Inquisition for his ...