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The History of Physics Podcast
The History of Physics Podcast episodes
- Cavendish's Torsion Balance: Weighing the Earth in 1798
Henry Cavendish’s 1798 torsion‑balance experiment measured Earth's mass for the first time, unlocking a quantitative gravitational constant. The episode traces his meticulous craftsmanship, the scientific community that vetted his data, and how this breakthrough reshaped navigation, engineering, and modern cosmology.
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17 min - Kepler’s Elliptical Revolution: How the Perfect Circle Was Replaced
This episode traces how Johannes Kepler, using Tycho Brahe’s precise observations and Archimedes’ principle of equal areas, uncovered that planetary orbits are ellipses rather than perfect circles. It explores the scientific, political, and cultural forces that allowed Kepler to overturn a long‑standing geometric dogma and set the stage for Newtonian gravity.
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19 min - Zhang Heng’s Bronze Seismoscope: The First Earthquake Detector
In 132 CE, Chinese inventor Zhang Heng created a bronze seismoscope with dragon heads that could detect distant quakes—a pioneering leap in experimental physics. This episode traces the device’s design, its political impact on the Han court, and how it set the stage for modern seismology.
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17 min - From Fission to Fallout: How Mass‑Energy Became the Bomb’s Secret
From Otto Hahn’s accidental split of uranium to Enrico Fermi’s critical‑mass calculations, this episode traces the chain reaction that turned Einstein’s E=mc² from a theoretical curiosity into the secret behind the first atomic bomb. We follow the scientists, the politics, and the engineering feats that made a myth about disappearing mass a global reality.
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15 min - First Nuclear Reactor: From Theory to Chain Reaction
Explore how Enrico Fermi and colleagues turned theoretical fission into Chicago Pile‑1, the first controlled nuclear chain reaction that reshaped science, war, and energy policy.
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20 min - Penzias & Wilson's Cosmic Hiss: How an Antenna Unveiled the Big Bang
In 1964 at Bell Labs, Arno Penzias and Robert Wilson stumbled upon a steady microwave hum that matched a temperature of about 2.7 K—an unexpected hiss that turned out to be the relic radiation from the Big Bang. Their discovery not only confirmed cosmological theory but sparked a cascade of missions—from COBE to Planck—that mapped the universe’s ancient light.
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15 min - Mercury’s 43‑Arcsecond Mystery: How Its Orbit Proved Einstein’s Theory
From painstaking telescopic observations of Mercury to Einstein’s elegant geometric explanation, this episode traces the 19th‑century anomaly that forced a revolution in gravity theory. It explores how astronomers, mathematicians, and physicists converged on the perihelion precession, and why the result still shapes modern astrophysics.
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19 min - Quantum Jumps: How Bohr’s Leap Rewrote Atoms
Explore how Niels Bohr introduced quantized electron orbits in the early 1900s, turning a paradox into a cornerstone of modern physics. The episode traces the scientific debate, experimental constraints, and lasting influence on quantum theory.
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19 min - From Spooky Action to Experiments: How Bell’s Theorem Turned Physics Into a Lab
Explore the journey from Einstein’s philosophical challenge about entanglement to John Bell’s mathematical inequality that opened the door to quantum experiments, reshaping our understanding of reality and paving the way for modern quantum technologies.
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20 min - Ibn al‑Haytham’s Dark Room Experiment: The First Controlled Test of Light
Follow 11th‑century physicist Ibn al‑Haytham as he seals a chamber, pokes a tiny hole, and proves that light comes from objects—not the eye. His meticulous experiment overturns Aristotle’s theory, lays foundations for systematic observation, and echoes through Galileo, Newton, and modern optics.
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12 min
About The History of Physics Podcast
From the publisher's feed
Explore the extraordinary history of physics, from the earliest attempts to explain motion, matter, light, and the heavens to the discoveries that transformed our understanding of space, time, energy, atoms, and the universe. The History of Physics Podcast follows the thinkers, experiments, equations, instruments, institutions, and scientific revolutions that built modern physics across thousands of years.
Episodes trace ideas from ancient Greek natural philosophy, astronomy, and mechanics through the Scientific Revolution, Galileo, Kepler, Newton, thermodynamics, electromagnetism, optics, statistical mechanics, relativity, quantum theory, nuclear physics, particle physics, cosmology, and the search for deeper laws of nature. The show also explores famous experiments, rivalries between scientists, failed theories, technological breakthroughs, major laboratories, mathematical innovations, and the historical circumstances that changed the direction of scientific thought.
Whether you are interested in Newton and Einstein, quantum mechanics, black holes, electricity, atomic theory, space exploration, or the people behind the equations, the podcast tells the human story of how physics developed and why its discoveries changed civilization. The History of Physics Podcast is hosted by Josh Linsk.