RADIOACTIVITY.EU.COM

icon THE PHENOMENON

THE PHENOMENON

icon IN DAILY LIFE

IN DAILY LIFE

icon QUESTION OF DOSES

QUESTION OF DOSES

icon AT THE DOCTOR’S

AT THE DOCTOR’S

icon At the laboratory

At the laboratory

icon At the museum

At the museum

icon NUCLEAR ENERGY

NUCLEAR ENERGY

icon RADIOACTIVE WASTE

RADIOACTIVE WASTE

A general public knowledge base dedicated to radioactivity created and maintained by the french physics community

E = mc² : mass or internal energy

The internal energy of an object is defined as the energy of that object at rest. This energy is related to its mass M and the square of the speed of light c², by the Einstein formula E = mc². It is also called by physicists mass energy. In normal conditions, the mass energy is very large compared to other energies such as kinetic energy, given the value of the speed of light (300 000 km / s), which enter by its square in the formula.

Similar definition(s) :

Binding energy

Back to glossary