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Home/ Questions/Q 10107
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Hasan Mahmud
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Hasan MahmudExpert
Asked: October 8, 20232023-10-08T17:00:55+06:00 2023-10-08T17:00:55+06:00In: Science

How does the sun create heat and light?

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How does the sun create heat and light?
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    1. Jeion Ahmed Expert
      2023-10-08T17:05:23+06:00Added an answer on October 8, 2023 at 5:05 pm

      The Sun generates heat and light through a process known as nuclear fusion, specifically a type called thermonuclear fusion. This process occurs in the Sun’s core, where immense pressure and temperature conditions are present.

      Here’s a simplified explanation of how the Sun creates heat and light through nuclear fusion:

      Hydrogen Nuclei Fusion:
      The primary fuel for the Sun’s energy production is hydrogen, which is abundant in its core. High temperatures and pressures in the core cause hydrogen nuclei (protons) to collide and fuse together to form helium nuclei. This process is known as nuclear fusion.

      The most common fusion reaction in the Sun involves four hydrogen nuclei fusing to create one helium nucleus, along with releasing a tremendous amount of energy in the form of light and heat.

      Energy Release:
      The fusion process converts a small portion of the mass of the hydrogen nuclei into energy according to Einstein’s equation E=mc^2.

      Where E is energy, m is mass, and c is the speed of light. The released energy manifests as light and heat, which is what we observe and feel as sunlight and warmth.

      Radiation of Light and Heat:
      The energy released during nuclear fusion in the Sun’s core is in the form of high-energy photons, primarily in the form of visible light, ultraviolet (UV) light, and other electromagnetic radiation. These photons travel through the Sun’s layers, eventually reaching the surface and being emitted into space as sunlight.

      The sunlight, containing both light and heat, then travels through space and reaches Earth and other celestial bodies in the solar system, providing the necessary energy for life and various processes.

      This continuous process of nuclear fusion in the Sun’s core is what sustains its energy output, creating the heat and light that power our solar system. It’s important to note that the Sun’s core is incredibly hot and under immense pressure, conditions necessary for nuclear fusion to occur at the scale observed in stars like the Sun.

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