
Energy-mass relation
The energy-mass relation, expressed as E=mc², shows that energy (E) and mass (m) are interchangeable; they are different forms of the same thing. This means that a small amount of mass can be converted into a large amount of energy, which is the principle behind nuclear reactions. Essentially, mass is a concentrated form of energy, and under certain conditions, it can be transformed into energy, or vice versa. This relationship helps us understand phenomena like nuclear power and the sun’s energy, where tiny amounts of mass produce immense amounts of energy.