How does the Sun produce light and heat? The Sun is a medium-sized star among the star categories. The solar system revolves around the sun. The sun is a primary source of light and heat for the earth and is responsible for maintaining the earth's temperature within a reasonable range that supports life. There has been considerable debate about the source of heat and light emitted by the sun. In the 1850s, scientists believed that when gravitational force is converted into thermal energy, light is produced. Some have suggested that when meteors fall on planets in the solar system, that's when light is produced. Subsequently, theories developed in light of modern technologies and as man got closer to the sun he became able to measure the changes occurring on the planet. surface of the sun. In 1968, scientists obtained sufficient evidence, by capturing neutrinos from sunlight, that the reason for the heat and light emitted by the sun is due to the nuclear reactions that continually take place in it. Before discussing the details of how light and heat are produced, the characteristics of the sun should be kept in mind. The sun's body is made of hydrogen at high temperatures which can cause nuclear fusion. The fusion process requires two hydrogen atoms to fuse their nuclei and as a result a significant amount of energy is released in the form of light and heat which travels from the sun to the earth. Furthermore, the fusion of two hydrogen nuclei results in the formation of helium. The fusion process is a never-ending process on the surface of the sun. On average 120 million tons of mass, consisting mainly of hydrogen, are converted into helium in 60 seconds. While some matter is also converted into energy (144). The energy emitted from... the center of the paper... in the wavelengths of lights that the human eye sees in the rainbow that forms when light passes through the drops of water in the air. It then changes its path using the principles of refraction, and lights of different wavelengths take a turn at a different angle. In addition to the wavelengths of visible light, there are other wavelengths that our eye cannot see. Infrared is one example that can be sensed by the skin. Infrared light increases the temperature of objects. It is because of this particular wavelength that the rays cause the temperature of the earth and the atmosphere in general to increase. Distribution of Energy in the Solar Spectrum Electromagnetic energy can be explained by dealing with the diffusion of energy over a range of wavelengths. Radiation can be measured by finding the energy falling per second or Watts per square meter for each 1 micrometer wavelength band.