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How to Understand E=mc2 . Formula

August 11, 2023 by admin Category: How To

You are viewing the article How to Understand E=mc2 . Formula  at Tnhelearning.edu.vn you can quickly access the necessary information in the table of contents of the article below.

The equation E=mc^2 is perhaps one of the most famous and impactful formulas in the field of physics. It was introduced by renowned scientist Albert Einstein in his theory of relativity, and it revolutionized our understanding of energy, mass, and the relationship between the two. This equation signifies that energy (E) is equal to the product of mass (m) multiplied by the square of the speed of light (c) in a vacuum. While the formula may seem intimidating at first glance, understanding its implications and significance can provide insights into the fabric of the universe itself. In this article, we will delve into the essence of E=mc^2, explaining its components and exploring its profound implications for both physics and everyday life.

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There are 7 references cited in this article that you can see at the bottom of the page.

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The formula E = mc 2 was first known when it was introduced in a paper by Albert Einstein in 1905 and became the most famous formula that set the stage for a breakthrough in science and technology later. In the formula E=mc 2 , E is energy, m is mass and c is the speed of light in a vacuum. [1] X Source of Research Even people with no background in physics have heard of this formula and are, to some extent, aware of its influence, however, most of the time. that number has not grasped the true meaning of this formula. Simply put, this is a formula that shows the relationship between energy and matter: especially the fact that energy and matter are two different forms of the same thing. [2] X Source of Research This simple formula changed the way energy was viewed and has since led to a series of important strides that make up modern technologies today.

Table of Contents

  • Steps
    • Understand the formula
    • Applying the formula in practice

Steps

Understand the formula

Image titled Understand E=mc2 Step 1

Image titled Understand E=mc2 Step 1

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Define the variables in the formula. To understand any formula, the first step is to understand what each variable in the formula represents. In this case, E is the energy of the object at rest, m is the mass of the object, and c is the speed of light in a vacuum.

  • The speed of light c is a constant that is approximately 3.00×10 8 meters per second. In Einstein’s theory of relativity, c 2 acts as a unit-changing factor rather than a constant. Since energy is measured in units of Joule (J) or kg m 2 s -2 , the use of c 2 is the result of dimensional analysis which ensures that the relationship between energy and mass is one-dimensional .
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Image titled Understand E=mc2 Step 2

Image titled Understand E=mc2 Step 2

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Understand what energy is. Energy can exist in many forms such as thermal, electrical, chemical, nuclear, etc. [3] X Research Sources Energy can be exchanged between two systems, where one system gives energy and the other gives energy. an energy receiving system.

  • Energy cannot be created or destroyed, it can only be converted from one form to another. For example, coal has a lot of potential energy that can be converted into heat when burned.
Image titled Understand E=mc2 Step 3

Image titled Understand E=mc2 Step 3

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Determine volume. The mass of an object is defined as the amount of matter contained in that object. [4] X Research Sources

  • There are also a few other definitions of mass. “Constant mass” and “relative mass” are two of them. Constant mass, as the name implies, is mass that remains constant under all circumstances. Meanwhile, the relative mass depends on the velocity of the object. The mass in the formula E = mc 2 is constant mass. This is an important point contrary to the popular belief that the mass of an object does not change with increasing speed.
  • Remember that mass and weight are two different concepts. Weight is the gravity of an object, and mass is the amount of matter that makes up the object. Mass changes only when the object is physically changed, while weight changes depending on the gravity of the environment. Mass is measured in kilograms (kg), weight is measured in newtons (N).
  • Similar to energy, mass is neither created nor destroyed, but only converted from one form to another. For example, an ice cube may melt into a liquid form but its mass does not change.
Image titled Understand E=mc2 Step 4

Image titled Understand E=mc2 Step 4

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Mass and energy are two equivalent quantities. [5] X Research Source This formula shows the similarity of mass and energy, and shows how much energy is contained in a given volume of substance. And most importantly, this formula shows that an object with a small mass also contains a very large amount of energy. [6] X Research Source

Applying the formula in practice

Image titled Understand E=mc2 Step 5

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Image titled Understand E=mc2 Step 5

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Source of usable energy. Most of the energy that people use today comes from the burning of coal and natural gas. When these fuels are burned, the bonds formed by the valence electrons are broken and energy is released, so that people can use that energy for life.

  • Getting energy in this way is not only inefficient but also harmful to the environment.
Image titled Understand E=mc2 Step 6

Image titled Understand E=mc2 Step 6

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Use Einstein’s energy formula to increase the efficiency of energy conversion. The formula E=mc 2 shows that the nucleus of an atom contains more energy than the valence electrons of that atom. [7] X Research Source The energy released when breaking an atom is much larger than the energy released in the process of breaking an electron bond.

  • Nuclear energy is also based on this principle. Nuclear reactors cause fission (which causes atoms to separate), and humans will recover the energy released from that fission.
  • Image titled Understand E=mc2 Step 7

    Image titled Understand E=mc2 Step 7

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    Technological inventions come true thanks to E=mc 2 . The formula E=mc 2 has helped create a lot of interesting new technologies that perhaps today’s humans can hardly live without, for example: [8] X Research Source

    • Positron tomography (PET) uses radiation to see the inside of the body.
    • Based on this formula, scientists have developed communication technologies from satellites and autonomous rovers.
    • The age of the artifact is determined by the radiocarbon method, which is based on the radioactive decay process according to the formula E=mc 2 .
    • Nuclear energy is a cleaner and more efficient source of energy than traditional energy sources that people still use.
  • X

    wikiHow is a “wiki” site, which means that many of the articles here are written by multiple authors. To create this article, 47 people, some of whom are anonymous, have edited and improved the article over time.

    There are 7 references cited in this article that you can view at the bottom of the page.

    This article has been viewed 132,131 times.

    The formula E = mc 2 was first known when it was introduced in a paper by Albert Einstein in 1905 and became the most famous formula that set the stage for a breakthrough in science and technology later. In the formula E=mc 2 , E is energy, m is mass and c is the speed of light in a vacuum. [1] X Source of Research Even people with no background in physics have heard of this formula and are, to some extent, aware of its influence, however, most of the time. that number has not grasped the true meaning of this formula. Simply put, this is a formula that shows the relationship between energy and matter: especially the fact that energy and matter are two different forms of the same thing. [2] X Source of Research This simple formula changed the way energy was viewed and has since led to a series of important strides that make up modern technologies today.

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    In conclusion, comprehending the famous equation E=mc^2 is vital for understanding the intricate relationship between energy and mass. This equation, formulated by Albert Einstein, revolutionized the field of physics and has had profound implications on our understanding of the universe. By breaking down the equation, we can see that energy and mass are interchangeable, with mass being a concentrated form of energy. The speed of light, c, acts as a conversion factor, highlighting the immense amount of energy that even a small amount of mass can possess. By grasping the concept behind E=mc^2, individuals can gain a deeper understanding of the fundamental nature of the universe and the profound implications of this equation on various aspects of scientific knowledge and technological advancements. It is through the pursuit of understanding complex equations like E=mc^2 that we push the boundaries of human knowledge and pave the way for future breakthroughs in science and technology.

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    5. Simple breakdown of Einstein’s theory of relativity and its relation to E=mc2
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