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E=MC2
In physics, mass–energy equivalence is the concept that the mass of an object or system is a measure of its energy content. For instance, adding 25 kilowatt-hours (90 megajoules) of any form of energy to any object increases its mass by 1 microgram, increasing its inertia and weight accordingly, even though no matter has been added.
A physical system has a property called energy and a corresponding property called mass; the two properties are equivalent in that they are always both present in the same (i.e. constant) proportion to one another. Mass–energy equivalence arose originally from special relativity, as developed by Albert Einstein, who proposed this equivalence in 1905 in one of his Annus Mirabilis papers entitled "Does the inertia of an object depend upon its energy content?"[1] The equivalence of energy E and mass m is reliant on the speed of light c and is described by the famous equation:
E = mc^2
Thus, this mass–energy relation states that the universal proportionality factor between equivalent amounts of energy and mass is equal to the speed of light squared. This also serves to convert units of mass to units of energy, no matter what system of measurement units is used.
If a body is stationary, it still has some internal or intrinsic energy, called its rest energy. Rest mass and rest energy are equivalent and remain proportional to one another. When the body is in motion (relative to an observer), its total energy is greater than its rest energy. The rest mass (or rest energy) remains an important quantity in this case because it remains the same regardless of this motion, even for the extreme speeds or gravity considered in special and general relativity; thus it is also called the invariant mass.
On the one hand, the equation E = mc2 can be applied to rest mass (m or m0) and rest energy (E0) to show their proportionality as E0 = m0c2.[2]
On the other hand, it can also be applied to the
E=MC2
In physics, mass–energy equivalence is the concept that the mass of an object or system is a measure of its energy content. For instance, adding 25 kilowatt-hours (90 megajoules) of any form of energy to any object increases its mass by 1 microgram, increasing its inertia and weight accordingly, even though no matter has been added.
A physical system has a property called energy and a corresponding property called mass; the two properties are equivalent in that they are always both present in the same (i.e. constant) proportion to one another. Mass–energy equivalence arose originally from special relativity, as developed by Albert Einstein, who proposed this equivalence in 1905 in one of his Annus Mirabilis papers entitled "Does the inertia of an object depend upon its energy content?"[1] The equivalence of energy E and mass m is reliant on the speed of light c and is described by the famous equation:
E = mc^2
Thus, this mass–energy relation states that the universal proportionality factor between equivalent amounts of energy and mass is equal to the speed of light squared. This also serves to convert units of mass to units of energy, no matter what system of measurement units is used.
If a body is stationary, it still has some internal or intrinsic energy, called its rest energy. Rest mass and rest energy are equivalent and remain proportional to one another. When the body is in motion (relative to an observer), its total energy is greater than its rest energy. The rest mass (or rest energy) remains an important quantity in this case because it remains the same regardless of this motion, even for the extreme speeds or gravity considered in special and general relativity; thus it is also called the invariant mass.
On the one hand, the equation E = mc2 can be applied to rest mass (m or m0) and rest energy (E0) to show their proportionality as E0 = m0c2.[2]
On the other hand, it can also be applied to the