Proving E_0 = mc^2: Exploring the Constancy of Energy

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In summary, the conversation is about someone asking for a link to the most rigorous proof of the equation E_0 = mc^2 and questioning why there is a constant in the equation and how to prove that it is equal to 0. They are also discussing a paper that only proves a weaker statement.
  • #1
quZz
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Hello everyone
Can some one please provide (a link to) the most rigorous proof of [itex]E_0 = mc^2[/itex]?
Actually, I got stuck on this question: why doesn't [itex]E_0 = mc^2 + \rm{const}[/itex]? How to prove that [itex]\rm{const} = 0[/itex]?
 
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  • #3
Hi, thanks for a quick reply.
In this paper it only proves that if energy of a body at rest is changed by [itex]dE[/itex], its mass also changes by [itex]dm=dE/c^2[/itex]. It doesn't prove, however, a much stronger statement that all its energy equals its mass times c squared...
 

Related to Proving E_0 = mc^2: Exploring the Constancy of Energy

1. What is the significance of E_0 = mc^2 in the scientific community?

The equation E_0 = mc^2, also known as the mass-energy equivalence equation, is one of the most famous and fundamental equations in physics. It states that mass and energy are two interchangeable forms of the same physical quantity, and that the total energy of a system is equal to its mass multiplied by the square of the speed of light. This concept revolutionized our understanding of the universe and forms the basis of modern theories such as Einstein's theory of relativity.

2. How was E_0 = mc^2 first discovered?

The equation E_0 = mc^2 was first proposed by Albert Einstein in 1905 as part of his theory of special relativity. It was derived from the famous equation E=mc^2, which relates the energy of a particle to its mass and the speed of light. Einstein realized that this equation could be modified to account for the fact that energy can also exist in the form of mass, leading to the more general equation E_0 = mc^2.

3. How is E_0 = mc^2 used in practical applications?

E_0 = mc^2 is used in a variety of practical applications, including nuclear power and nuclear weapons. In nuclear reactions, a small amount of mass is converted into a large amount of energy, in accordance with the mass-energy equivalence principle. This equation is also used in medical procedures such as PET scans, which rely on the conversion of mass into energy to produce images of the body's tissues.

4. Is E_0 = mc^2 always true?

Yes, E_0 = mc^2 is a fundamental law of physics and is always true. However, it is important to note that this equation only applies to objects moving at constant speeds or in inertial frames of reference. It does not account for objects moving at high speeds or in non-inertial frames, for which more complex equations must be used.

5. Are there any experiments that have been conducted to prove E_0 = mc^2?

Yes, there have been numerous experiments conducted to verify the validity of E_0 = mc^2. One of the most famous examples is the mass-energy equivalence experiment conducted by physicist Arthur Compton in 1923. This experiment involved measuring the mass of an electron before and after it was subjected to X-ray radiation, and the results were consistent with the predictions of E_0 = mc^2.

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