Nuclear physics | Physics | Khan Academy - Nuclear fusion | Physics | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/science/highschool-physics/x6679aa2c65c01e53:nuclear-physics/x6679aa2c65c01e53:nuclear-fusion/v/nuclear-fusion Want to explore more? Check out the full nuclear physics playlist here: https://www.youtube.com/playlist?list=PLSQl0a2vh4HCBNsg2hoAn0ZpFrmNbX4XO During nuclear fusion, two or more nuclei combine to form a different nucleus. When light nuclei fuse to produce a nucleus lighter than iron, energy is released (exothermic). When heavy nuclei fuse to produce a nucleus heavier than iron, energy is absorbed (endothermic). The release or absorption of energy relates to the difference in total mass of the reactants and products by E=mc^2. Nuclear fusion powers the Sun and other stars. Sections: 00:00 - Intro 00:30 - What is nuclear fusion? 03:25 - What powers the sun? 04:58 - Mass defect (E = mc^2) 09:00 - Stellar nucleosynthesis (proton-proton chain) ------------------ Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc