Episode Details

🔗 https://oxadow.com/?v=qXBMGx-t7-8 — 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 19-10-26

🔗 https://oxadow.com/mail/?v=qXBMGx-t7-8 — The Physics Letter: interesting physics news, remarkable discoveries and clear explanations, delivered to your inbox. Free to join.

Jump off a diving board and, for one second, you weigh nothing. Not less. Nothing. In 1907 a patent clerk took that one ordinary fact seriously, and it ended with light bending around the Sun and clocks in your basement running slow. This lecture walks you from a falling elevator all the way to curved spacetime, one simple step at a time.

0:00 The force you've never actually felt
3:18 What happens when the elevator cable snaps
6:23 Galileo's trick that killed a 2,000-year-old idea
10:31 The happiest thought of Einstein's life
15:15 Why a braking bus behaves exactly like gravity
19:27 Astronauts are NOT in zero gravity
22:32 The one thing a falling box can never hide
25:33 The beam of light that falls to the floor
30:12 Why your basement clock runs slow (and how it was measured)
40:20 Falling is natural. Standing still is the strange part.

SOURCES
- Richard P. Feynman, Robert B. Leighton, Matthew Sands, The Feynman Lectures on Physics, Vol. II, Chapter 42 "Curved Space" (Addison-Wesley, 1964)
- Richard P. Feynman, Robert B. Leighton, Matthew Sands, The Feynman Lectures on Physics, Vol. I, Chapter 7 "The Theory of Gravitation" (Addison-Wesley, 1963)
- Richard P. Feynman, Fernando B. Morinigo, William G. Wagner, Feynman Lectures on Gravitation, Lectures 5–7 (Addison-Wesley, 1995)
- Albert Einstein, "Über das Relativitätsprinzip und die aus demselben gezogenen Folgerungen," Jahrbuch der Radioaktivität und Elektronik 4 (1907), Part V
- Albert Einstein, "Über den Einfluß der Schwerkraft auf die Ausbreitung des Lichtes," Annalen der Physik 35 (1911)
- Galileo Galilei, Dialogues Concerning Two New Sciences, First Day (1638)
- Galileo Galilei, Dialogue Concerning the Two Chief World Systems, Second Day (1632)
- F. W. Dyson, A. S. Eddington, C. Davidson, "A Determination of the Deflection of Light by the Sun's Gravitational Field," Philosophical Transactions of the Royal Society A 220 (1920)
- R. V. Pound, G. A. Rebka Jr., "Apparent Weight of Photons," Physical Review Letters 4 (1960)
- Clifford M. Will, Was Einstein Right? Putting General Relativity to the Test, Chapters 2–4 (Basic Books, 1986)

⚠️ 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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