3. “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

4. 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.

6. energy mass Speed of light

7. 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.

8. 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.

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

10. The equivalence of mass
and energy means that a
high-precision mass
measurement will yield
information on the binding
energies of a system.