PBS
What Makes The Strong Force Strong?
Quantum mechanics gets weirder as you go to smaller sizes and higher energies. It’s strange enough for atoms, but positively bizarre when we get to the atomic nucleus. And today we’re going nuclear, as we dive into the weird world of...
Curated Video
How and Why the Four Fundamental Forces Operate
How does a force between particles work? What causes an attraction or repulsion? Why does electromagnetism and gravity have infinite range, but the strong and weak force have a small range? Quantum chromodynamics (QCD), and Quantum...
Curated Video
Why Protons Don’t Repel Each Other in Atomic Nuclei
Since electromagnetism is so strong, multiple protons in the nucleus of any atom like Helium should repel each other very strongly. So how do they stay glued together?...Because of a force that is even stronger than electromagnetism –...
Curated Video
Where Does Mass Come From? Understanding Symmetry Breaking
What is the origin of mass in the universe? Symmetry breaking. Symmetries in quantum mechanics result in 3 of the fundamental forces of nature - electromagnetic, weak and strong forces. However, the breaking of certain symmetries is just...
Curated Video
Quantum Chromodynamics (QCD): Visualizing the Strongest Force
QCD: Quantum Chromodynamics. How can positive protons be so close together in the nucleus, if they repel each other? Japanese physicist and Nobel laureate Hideki Yukawa sought to answer this question. He proposed the first significant...
Curated Video
Is a Final Theory of Everything Possible? Exploring Scientific Progress
Is a theory of everything really possible? What makes us think it even exists? If we look at historical precedent, we can see that we have united seemingly completely unrelated forces and particles to a more basic set of principles. For...
Curated Video
How Can Mass and Energy Be the Same Thing?
SUMMARY How is mass and energy the same thing? What is mass really? If you weigh 80kg and are in a car moving 100km/hr, your energy is equal to about 30000 joules. But did you know that the energy you have standing still, not moving at...
Curated Video
Understanding Qualified Charitable Distribution (QCD)?
What is Qualified Charitable Distribution?
Professor Dave Explains
Quantum Chromodynamics (QCD)
Electromagnetic force down, three more forces to go! Which one is next? Why it's the strong nuclear force, famous for keeping atomic nuclei together. What kind of particles will be involved in this quantum field theory? Let's find out.