How Luminiferous Aether Led to Relativity
Summary
This episode explores the history of the luminiferous ether, tracing its origins from ancient Greek philosophy to the 19th-century wave theory of light. It details how the famous Michelson-Morley experiment failed to detect the ether, a null result that shattered classical physics and paved the way for Einstein’s theory of relativity. The host also answers listener questions regarding the universe’s age, infinite size, and the scale of the cosmic microwave background.
Topics discussed
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The 19th Century Physics Crisis and Michelson
Ancient Origins and Huygens' Wave Theory
Newton's Corpuscular Theory vs. Ether
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Young's Double Slit and Maxwell's Equations
Galilean Relativity and the Ether Wind
The Michelson-Morley Interferometer Design
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The Null Result and Death of the Ether
Lorentz Transformations and Einstein's Relativity
The Modern Ether: Spacetime and Quantum Fields
Q&A: Infinite Universe and Finite Age
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Q&A: Size of the Universe at CMB Release
Listener Comments and Vesto Slipher
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