E = mc^2 is one of the most famous equations in the world and, of course, one of the most elegant. Albert Einstein formulated this equation, giving us the equivalence of mass and energy at rest. Using our e=mc^2 (emc2) calculator, you can calculate the energy of mass at rest.
In Albert Einstein’s own words: “It followed from the special theory of relativity that mass and energy are both but different manifestations of the same thing — a somewhat unfamiliar conception for the average mind.”
This equation is central to the theory of special relativity and gives us insight into how nuclear fusion or fission can be used to generate energy.
You can calculate the energy released from converting mass using the e = mc^2 (emc2) calculator.
The variables in the calculator include
Energy (E) The total energy of the system
Mass (m) The object’s mass
Speed of Light (c) The speed of light in a vacuum
E = mc^2 is one of the world’s most famous and elegant equations. It was formulated by Albert Einstein and gave the relationship between mass and energy.
Einstein’s equation tells us that mass at rest has a tremendous amount of energy inherent to it and that change in mass requires a change in energy. The common misconception is that mass can be converted into energy, but that’s not true.
For example, in nuclear fission or fusion reactions, we experience radioactive decay when the reactions occur. The mass of nuclear material we end up with will be less than the material we started with. The difference is the amount of energy released during the reaction that will be equivalent to the mass.
You might be wondering, then, what about photons? They don’t have any mass, and they travel at the speed of light and contain energy; how is this possible?
Well, there is an expanded but lesser-known version of the equation, which includes the momentum (p) of the particle.
So, for a photon, mass = 0, and the equation becomes E = pc. And since photons move at the speed of light, they have momentum and, therefore, energy.
Einstein’s equation paved the way not only for the creation of the atomic bomb but also for harnessing nuclear energy in other forms. The principles behind nuclear weapons are the same as those used in modern-day nuclear power plants, all made possible by Einstein’s simple and elegant equation E = mc^2.
The relationship between energy and mass can be calculated using the following formula
Where,
E → Energy
m → mass of the object
c → Speed of light in vacuum
E = mc^2 This equation shows that mass and energy are two forms of the same thing and can be converted into each other. According to the equation, matter (or mass) and energy may both be thought of as different manifestations of the same substance.
We can see E = mc^2 at work in many applications in real life, nuclear reactions which occur in nuclear power plants and nuclear submarines are examples that are generally quoted. Even ordinary applications, such as the device you are reading this on, converts a minute amount of the battery’s mass into electricity. Airplanes flying in the sky convert fuel’s mass into energy to fly. These are all examples of Einstein’s relation E = mc^2.
The speed of light is a constant in the equation E=mc^2. It represents the maximum speed at which information or energy can travel through space.
The speed of light is a fundamental constant in physics, and its presence in the equation highlights the relationship between mass and energy.
E=mc^2 is also applicable to any process that involves a change in mass, not only to nuclear reactions.
According to the law of conservation of mass, mass can be neither created nor destroyed but can be converted into energy and vice versa, as described by the E = mc^2 equation.
