Home » Physics » Symmetry in Physical Laws: PART II : Conservation and inner conversion of mass-energy

# Symmetry in Physical Laws: PART II : Conservation and inner conversion of mass-energy

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# What is it?

In practical, we see that if we burn a coal, it emits heat & gives ash. Scientifically, the coal (matter) is converted into heat (energy) and precipitate (matter). This is a balance conversion that matter converts into energy. Similarly, we can generate a lot of energy after nuclear fission, in which also matter is converted into energy.

In inverse, similarly, energy can also be converted into matter. Physics’ most famous equation E= mc² given by Einstein also says the same. E (energy) is directly related to m (mass).

## Statement of Conservation of Mass(Matter)

Matter can never be created or destroyed, but it can convert itself into several other forms of either matter or energy or both.

## Statement of Conservation of Energy

Energy can never be created or destroyed, but it can convert itself to other forms of matter & energy.

## Statement of Conservation of Mass-Energy

One can easily regard this as a Symmetry operation, in which Energy ↔ Matter. Usually you can say, Matter (mass) and Energy both are conserved with their inner-conversions and the total value of mass+energy is a constant, since origin of universe.

The mass and energy can never be produced or destroyed — but they can be converted into one form to other.

© Gaurav Happy Tiwari, 2011