Einstein's Mass-Energy Equivalence

📊 intermediate

$$E = mc^2$$

Describes the relationship between mass and energy in the rest frame of an object.

Variables & Units

$E$

Energy

Unit: Joule ($J$)

$m$

Mass

Unit: Kilogram ($kg$)

$c$

Speed of light in vacuum

Unit: $\approx 3 \times 10^8 m/s$

Key Information

📐 Derived From

Derived from Special Relativity principles.

💡 Example

Conversion of $1 kg$ of matter releases $9 imes 10^{16} J$ of energy.

🔧 Applications

Nuclear power, particle physics, and cosmology.

⚠️ Constraints

Applies to energy at rest.

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