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Summary: The mass of a stable nucleus is less than the sum of its parts by Δm = E/c2, where E is the binding energy. Similarly, the mass of a stable atom or molecule is less than the sum of its parts by Δm = E/c2, where E is the binding energy.

## How do you calculate nuclear binding energy?

To convert the binding energy to MeV (megaelectron volts) per **nucleon** we will employ the conversion factor for converting joules into MeV (1 MeV = 1.602 x 10^{–}^{13} J) and the number of nucleons (protons and neutrons) which make up the nucleus.

## What is the proof of E mc2?

In the equation, **the increased relativistic mass (m) of a body times the speed of light squared (c ^{2}) is equal to the kinetic energy (E) of that body**. Brian Greene kicks off his Daily Equation video series with Albert Einstein’s famous equation E = mc

^{2}.

## How did Einstein come up with E mc2?

The first explained **the photoelectric effect**, the second offered experimental proof of the existence of atoms, and the third introduced the theory of special relativity. In the fourth paper, Einstein explained the relationship between energy and mass. That is, E=mc^{2}.

## How did e mc2 impact society?

Perhaps the equation’s most far-reaching legacy is that it provides the key to understanding the most basic natural processes of the universe, from microscopic radioactivity to the Big Bang itself. Radioactivity is E = mc2 in miniature. Einstein himself suspected this even as he devised the equation.

## What are the units of E mc2?

E = mc^{2}—In SI units, the energy E is measured in **Joules**, the mass m is measured in kilograms, and the speed of light is measured in meters per second.

## Why is c Squared?

Now we’re getting to the c² part of the equation, which serves the same purpose as the star-on and star-off machines in “The Sneetches.” The c stands for the speed of light, a universal constant, so the whole equation breaks down to this: **Energy is equal to matter multiplied by the speed of light squared**.