GLASS Shouldn't Let Light Through — Feynman Explains Why It Does скачать в хорошем качестве

GLASS Shouldn't Let Light Through — Feynman Explains Why It Does

You look through a window every day. Have you ever stopped to wonder why you can? A brick wall and a sheet of glass are both solids, both packed with atoms, both full of electrons that should absorb light. One blocks everything. The other might as well not be there. What's the difference, and why doesn't physics seem to care about what "should" happen? In this video, we explore one of the most deceptively simple questions in all of physics — why is glass transparent? — drawing on Richard Feynman's legendary explanations from QED: The Strange Theory of Light and Matter and The Feynman Lectures on Physics. From the classical picture of electromagnetic waves to quantum energy levels, band gaps, and the strange probabilistic world of quantum electrodynamics, this lecture builds the full answer layer by layer. 📚 SOURCES: Richard P. Feynman, QED: The Strange Theory of Light and Matter (Princeton University Press, 1985) — Chapter 1: "Photons — Corpuscles of Light," Chapter 2: "Fits of Reflection and Transmission — Quantum Behaviour" Richard P. Feynman, Robert B. Leighton, Matthew Sands, The Feynman Lectures on Physics, Vol. I (Addison-Wesley, 1963) — Chapter 26: "Optics: The Principle of Least Time," Chapter 31: "The Origin of the Refractive Index" Richard P. Feynman, Robert B. Leighton, Matthew Sands, The Feynman Lectures on Physics, Vol. III (Addison-Wesley, 1965) — Chapter 1: "Quantum Behaviour" Richard P. Feynman, The Character of Physical Law (MIT Press, 1965) — Chapter 6: "Probability and Uncertainty" Niels Bohr, "On the Constitution of Atoms and Molecules," Philosophical Magazine, Series 6, Vol. 26 (1913) 🎬 CREDITS: Script & research: AI-generated educational content Inspired by: The lectures and writings of Richard P. Feynman Production: Oxadow ⏱️ TIMESTAMPS: 00:00 — Every solid blocks light. Except the one in your window. 03:12 — The classical argument: why solids SHOULD be opaque 08:45 — "Maybe glass has tiny holes?" — wrong, and here's why 12:20 — The myth that glass is a liquid (and why it won't die) 15:30 — The quantum staircase: why electrons are picky eaters 22:00 — Band gaps — the key that unlocks transparency 28:15 — Why glass blocks UV but lets visible light through 33:40 — Why metals are opaque and diamonds sparkle 38:50 — Newton's impossible puzzle: how does the photon know? 44:10 — Feynman's little arrows and the probability of reflection 50:30 — Colored glass, impurities, and the art of selective absorption 55:00 — Your window is editing reality — what else is? 💬 After watching this, here's something to sit with: if our eyes had evolved to see ultraviolet light instead of visible light, glass would be completely opaque to us. What other "obvious" properties of the world around you might just be artifacts of the detector you happen to be? ⚠️ WARNING: [This video is AI-generated (synthetic voice and visuals). It is an original, fictional lecture inspired by Richard Feynman's teaching style and public ideas, and is not an authentic recording, endorsement, or statement by Richard Feynman or his estate. Any resemblance is for educational/creative purposes]