Question about energy-mass relationship

In summary, according to Einstein's equation (e=mc^2), the mass of a disc does not change when inserted into a disc player and shows energy in the form of a video on a TV or monitor screen. This is because the disc does not change and therefore its mass remains the same. However, if the TV and disc reader are not plugged in, the video cannot be shown.
  • #1
parshyaa
307
19
Why the mass of disc does not changes according to Einstein's equation(e=mc^2) when we insert it inside a disc player and it shows us energy in the form of video on a tv/monitor screen.

  • I think there's something wrong in this question, can anybody point out the error with reasoning.
 
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  • #2
parshyaa said:
I think there's something wrong in this question, can anybody point out the error with reasoning.
The disc does not change, therefore, its mass does not change.
Can you describe your reasoning in more, smaller steps?
 
  • #3
Can you show the video without the TV and the disc reader being plugged in?
 
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1. What is the energy-mass relationship?

The energy-mass relationship, also known as Einstein's famous equation E=mc^2, states that energy and mass are equivalent and can be interchanged. This means that mass can be converted into energy, and vice versa.

2. How did Albert Einstein come up with the energy-mass relationship?

Einstein developed the energy-mass relationship as part of his theory of special relativity in 1905. He noticed that the speed of light, denoted by c, is constant and that energy and mass are related by the speed of light squared.

3. How does the energy-mass relationship apply to everyday life?

The energy-mass relationship has many practical applications in our daily lives. For example, nuclear power plants use the conversion of mass into energy to generate electricity. The sun also converts mass into energy through nuclear fusion, providing us with heat and light.

4. Can the energy-mass relationship be observed in nature?

Yes, the energy-mass relationship can be observed in nature through nuclear reactions. In these reactions, the mass of the reactants is converted into energy, releasing large amounts of energy in the process.

5. How does the energy-mass relationship impact our understanding of the universe?

The energy-mass relationship is a fundamental concept in physics and has greatly impacted our understanding of the universe. It has helped us understand the processes of nuclear fusion in stars, the creation of elements in the Big Bang, and the power of nuclear weapons. It also plays a crucial role in theories of the origin and evolution of the universe, such as the theory of cosmic inflation.

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