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

The aim of this web site is to explain radioactivity and its applications to the general public.

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