The History of Physics Podcast

Explore how Sir Isaac Newton, isolated in plague‑ridden England, used a simple apple and lunar motion to formulate the inverse‑square law of gravitation—unifying terrestrial falls with planetary orbits. This episode traces his use of calculus, the challenges he faced, and the lasting impact on physics as a global science.

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In this episode we follow Einstein’s 1935 EPR paper from a philosophical challenge into a concrete testable idea, through John Bell’s inequalities and the first experimental confirmations. We explore how thinkers like Schrödinger, Bohm, and others turned doubt into the modern resource of entanglement that powers quantum computing, teleportation, and cryptography.

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This episode unpacks Galileo Galilei’s inclined‑plane experiment—its design, results, and how it refuted Aristotle’s heavy‑falls law. We explore the experimental challenges, the misinterpretation of his intent, and the broader impact on measurement standards and the scientific method.

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This episode traces Thomas Young’s 1801 double‑slit experiment that shattered the particle view of light and revived wave theory, setting the stage for Maxwell, Einstein, and quantum mechanics. We explore how Young’s careful measurements challenged the ether hypothesis, spurred debates among Newtonians and wave theorists, and ultimately reshaped physics’ conceptual foundations.

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This episode explores three pivotal moments in physics history—Penzias and Wilson’s discovery of the cosmic microwave background, Christiaan Huygens’ pendulum clock that revolutionized timekeeping, and Max Planck’s desperate quantization that launched quantum theory. From laboratory quirks to theoretical breakthroughs, we uncover how curiosity, cross‑institutional collaboration, and bold hypotheses reshaped our understanding of the universe.

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This episode traces René Descartes' visionary vortex theory of the cosmos—an attempt to explain gravity without action at a distance—and follows its journey through Huygens, Euler, and even Lorentz into the 20th‑century ether debate. We examine how this mechanical dream seeded modern concepts from Maxwell’s fields to Einstein’s spacetime fabric, showing that old ideas can resurface as powerful tools in contemporary physics.

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This episode follows the trail from Aryabhata’s 499‑CE calculation of Earth’s rotation to its modern applications in navigation and climate science. We trace how his bold hypothesis challenged medieval astronomy, traveled across cultures, and laid groundwork for precision timekeeping and GPS.

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This episode traces John Bell's 1964 theorem that turned Einstein–Bohr philosophical disagreements into a concrete inequality, the experimental journey from Aspect’s pioneering tests to the loophole‑free experiments of Hensen, Giustina and Shalm, and the profound implications for our understanding of locality and realism. We explore how these experiments reshaped quantum theory, opened doors to quantum information science, and illustrated physics’ relentless march from speculation to empirical certainty.

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Explore how 14th‑century French bishop Nicolas Oresme drew velocity‐time curves long before Cartesian coordinates, laying groundwork for calculus and modern physics. The episode traces his pioneering sketches, the mathematical ideas he borrowed from Aristotelian mechanics, and the ripple effect on Newton, Leibniz, and the entire history of motion analysis.

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Ibn al‑Haytham, the 11th‑century Cairo polymath, built the first controlled experiment to test how light travels. His pinhole dark room disproved ancient extramission theories and laid the groundwork for wave optics, influencing Galileo, Newton, and modern imaging. The episode traces his methods, the cultural context of Fatimid Egypt, and the lasting legacy of his work.

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