Episode Details

🔗 https://oxadow.com/?v=VW50xaWMYJ4 — The Physics of Everything: gravity, light, time, quantum mechanics and the invisible world of electromagnetism, explained step by step. Explore all three illustrated PDF books in The Complete Library.

Uploaded 15-10-26

🔗 https://oxadow.com/mail/?v=VW50xaWMYJ4 — The Physics Letter: interesting physics news, remarkable discoveries and clear explanations, delivered to your inbox. Free to join.

Some of the stars above you may not exist anymore. But here's the stranger part: physics says the light from them never aged a single second on the way. So did it travel for a thousand years, or not at all? And what exactly is hitting your eye when you look up? In this lecture, Feynman takes apart one of the most repeated claims in popular physics, and the real answer is weirder than the myth.

0:00 The light that took a thousand years and zero seconds
1:11 You have never seen anything "right now"
5:37 The physics claim that light never ages
7:21 The hidden rule that ties time and space together
15:34 Why "the photon's point of view" doesn't exist
19:54 The rocket that reaches Andromeda in one year
27:46 How many photons actually hit your eye from a star?
33:12 Feynman's strangest idea: light as a handshake through time
38:47 Why every star is slightly in the wrong place
43:10 The star that died 168,000 years before we saw it

SOURCES
Richard P. Feynman, QED: The Strange Theory of Light and Matter (Princeton University Press, 1985), Chapter 1 "Introduction" and Chapter 2 "Photons: Particles of Light"
Richard P. Feynman, Robert B. Leighton and Matthew Sands, The Feynman Lectures on Physics, Volume I (1963), Chapter 15 "The Special Theory of Relativity", Chapter 17 "Space-Time", Chapter 34 "Relativistic Effects in Radiation" (section on aberration)
Albert Einstein, "On the Electrodynamics of Moving Bodies," Annalen der Physik (1905)
Hermann Minkowski, "Space and Time," lecture delivered in Cologne (1908)
John A. Wheeler and Richard P. Feynman, "Interaction with the Absorber as the Mechanism of Radiation," Reviews of Modern Physics (1945)
Richard P. Feynman, "The Development of the Space-Time View of Quantum Electrodynamics," Nobel Lecture (1965)
Selig Hecht, Simon Shlaer and Maurice Henri Pirenne, "Energy, Quanta, and Vision," Journal of General Physiology (1942)
James Bradley, "An Account of a New Discovered Motion of the Fix'd Stars," Philosophical Transactions of the Royal Society (1729)
Edwin F. Taylor and John Archibald Wheeler, Spacetime Physics (W. H. Freeman, 1966)

⚠️ 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]

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