Credit: FotografiaBasica E+ Getty Images
Q:

# What does "E=mc²" mean?

A:

In the equation E=mc², e stands for energy, m stands for mass and c² stands for the speed of light squared. First proposed by Albert Einstein, this equation demonstrates that energy and matter are interchangeable.

Know More

## Keep Learning

Einstein first published the formula in 1905, which is often called his "miracle year," according to the Encyclopaedia Britannica. It was part of a paper titled “Does the Inertia of a Body Depend Upon Its Energy Content?”

The equation established the first mechanism to explain the energy source of stars such as the sun, and it opened the way for new advances in nuclear power and nuclear medicine.

Sources:

## Related Questions

• A:

An easy way to make E=mc2 understandable to children is to start with a paraphrase of the first law of thermodynamics: "Nothing disappears; everything goes somewhere." Matter, for example, cannot be destroyed, but only turned into energy. E=mc2 is the equation that describes the amount of energy it turns into.

Filed Under:
• A:

According to Emc2-explained, the equation E=mc^2 describes the conversion between matter and energy. This is a constant relationship, and it applies to the conversions observed in atomic fission and nuclear fusion as well as the release of energy obtained from matter or antimatter reactions. In each case, E=mc^2 is a way of predicting energy release. The equation also predicts the amount of energy required to synthesize matter from energy.

Filed Under:
• A:

According to Pelamis Wave Power, wave energy is energy transferred from wind forces to the waves of a body of water, such as the ocean. Wave energy should not be confused with tidal energy.