1. What is E=mc²?

E=mc² is Einstein's mass-energy equivalence formula from his Special Theory of Relativity, showing that energy (E) and mass (m) are interchangeable. The 'c' represents the speed of light in a vacuum (approximately 3×10⁸ m/s).

2. How Does the Calculator Work?

The calculator uses Einstein's equation:

Where:

• \( E \) — Energy (Joules)
• \( m \) — Mass (kilograms)
• \( c \) — Speed of light (299,792,458 m/s)

Explanation: The equation shows that a small amount of mass can be converted into a tremendous amount of energy due to the speed of light being squared.

3. Importance of Mass-Energy Equivalence

Details: This principle underlies nuclear energy and explains how stars produce energy. It fundamentally changed our understanding of the relationship between matter and energy.

4. Using the Calculator

Tips: Enter mass in kilograms. The result shows both the precise scientific value and a more readable approximation in Joules.

5. Frequently Asked Questions (FAQ)

Q1: Why is the energy value so large for small masses?
A: Because the speed of light is squared (a very large number), even tiny masses convert to enormous amounts of energy.

Q2: Can we convert mass completely to energy?
A: In practice, complete conversion is extremely difficult. Nuclear reactions convert only a small fraction of mass to energy.

Q3: What are practical applications of E=mc²?
A: Nuclear power plants, atomic bombs, and explaining stellar energy production all rely on this principle.

Q4: Does this work for any mass?
A: The equation applies universally, but noticeable effects only occur with nuclear-scale energies.

Q5: Why is c squared in the equation?
A: The squared term comes from the mathematics of special relativity and gives the equation its enormous energy scaling.