MASS and

ENERGY

“The mass of a body is a measure of its energy content”.

- mass is a property of all energy, and energy is a property of all mass, and the two properties are connected by a constant

MASS – ENERGY equivalence

This means that the total internal energy (E) of a

body at rest is equal to the product of its rest mass (m) and a suitable conversion

factor to transform from units of mass to units

of energy.

Albert Einstein postulated the equivalence of mass and energy in 1905.

energy mass Speed of light

Mass–energy equivalence does not imply that mass

may be "converted" to energy, but it allows for

matter to be converted to various types of radiation, and/or various other types of non-material kinetic or

potential energy.

Energy can neither be created nor destroyed, and energy, in all of its forms, has mass.

Mass also can neither be created nor destroyed,

and in all of its forms, has energy.

The total amount of energy (E) before the experiment is equal to the amount of energy after the experiment.

The equivalence of mass and energy means that a high-precision mass

measurement will yield information on the

binding energies of a system.