Explore the fascinating process of thermonuclear fusion that powers stars in this 34-minute video lecture from Princeton astrophysicist Joshua Winn. Discover how the sun's luminosity and age suggest its energy source, and delve into basic nuclear physics to understand low energy binding. Examine the most stable nuclei and learn about fusion, fission, and decay in positive nuclei. Uncover the role of symmetry energy in explaining the binding energy curve and understand how the sun fuses hydrogen to helium. Investigate Einstein's famous equation E=mc² and its implications for energy-mass exchange rates. Analyze the energy emission rate and dissect the sequence of reactions in proton fusion. Learn how quantum theory facilitates proton fusion and explore the solution to the instability of the Helium-2 nucleus. Gain a comprehensive understanding of why stars shine through this engaging astrophysics lesson.
Overview
Syllabus
The Sun's Luminosity and Age Suggest an Energy Source
Kelvin´s Colleagues Reveal Solar Nuclear Fusion
Basic Nuclear Physics Shows Low Energy Binding
The Most Stable Possible Nuclei are Revealed
Positive Nuclei Result in Fusion, Fission, and Decay
Symmetry Energy Explains the Binding Energy Curve
Mostly Hydrogen, the Sun Fuses It to Helium to Shine
E=mc2 Reveals Exchange Rates for Energy and Mass
What the Energy Emission Rate Reveals
Dissecting the Sequence of Reactions in Proton Fusion
Quantum Theory Aids Protons in Fusing
Instability of Helium-2 Nucleus Solved
Taught by
Wondrium
