The History of Physics Podcast

The History of Physics Podcast

By History Podcasts & Josh LinskSociety & CultureDocumentaryScienceHistory
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The History of Physics Podcast episodes

  • Carnot's Thermodynamic Ceiling: How a Young Engineer Redefined Heat Engines

    In 1824, Sadi Carnot showed that the efficiency of any heat engine is limited by its operating temperatures—a discovery that set the foundation for modern thermodynamics and reshaped industrial design. This episode traces Carnot’s reasoning, the scientific context before his insight, the reaction from contemporaries, and how his theorem continues to guide engineers today.

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    18 min
  • Tycho’s Nova & Archimedes’ Lever: From Sky Shocks to Mechanical Foundations

    This episode follows Tycho Brahe’s meticulous observations of the 1572 supernova that proved the heavens could change, and traces how Archimedes’s lever theorem laid the groundwork for modern mechanics. We explore the science, the instruments, the political support, and the lasting impact on physics and engineering.

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    13 min
  • Eratosthenes' Shadow Experiment: Measuring the Earth in 240 BCE

    In 240 BCE, Eratosthenes used a shadow‑casting stick to estimate the Earth’s circumference, pioneering large‑scale measurement of our planet. His method combined geometry with careful observation, laying groundwork for modern cartography and navigation.

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    19 min
  • Hertz’s First Spark: The Birth of Invisible Radio Waves

    In this episode we follow Heinrich Hertz as he proves Maxwell's electromagnetic waves with a spark‑gap transmitter, turning abstract equations into tangible radio waves. We explore how his experiments challenged the ether hypothesis, opened the door to wireless communication, and reshaped physics in the late 19th century.

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    16 min
  • Eddington’s 1919 Eclipse Experiment: First Proof That Gravity Bends Light

    In this episode we trace how a daring 1919 solar‑eclipse expedition led by Arthur Eddington captured the tiny deflection of starlight, delivering the first empirical confirmation that gravity curves space. We explore Einstein’s prediction, the experimental challenges, the controversy over data, and the lasting impact on modern physics.

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    19 min
  • Vera Rubin and the Discovery of Dark Matter

    Vera Rubin’s meticulous measurements of spiral galaxy rotation curves revealed a startling anomaly—stars far from galactic centers moved at unexpected speeds, pointing to unseen mass.

    Her work laid the empirical foundation for the dark matter hypothesis and reshaped our understanding of cosmology.
    Explore how Rubin's data, rigorous methodology, and persistence overturned Newtonian expectations and opened a new frontier in astrophysics.

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    18 min
  • Tycho’s 1577 Comet: The Night That Crushed the Crystal Spheres

    When Tycho Brahe recorded a bright comet in November 1577, he forced Aristotle’s crystal‑sphere model to collapse and opened the way to empirical astronomy. This episode traces how meticulous naked‑eye measurements, early triangulation, and international data sharing dismantled ancient cosmology, inspired Kepler’s planetary laws, and laid foundations for modern celestial mechanics.

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    17 min
  • Faraday’s Magnetic Spark: From Coil to Global Power

    In this episode we trace James Clerk Faraday’s 1831 experiment that revealed how a moving magnet induces electricity. We explore how his empirical laws, the ‘lines of force’, paved the way for Maxwell’s equations and the birth of electric generators that powered the Industrial Revolution. The story shows how curiosity, simple apparatus, and a bold insight sparked an entire era of technology.

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    18 min
  • Boltzmann’s Arrow of Time: From Entropy to the Quantum Age

    Ludwig Boltzmann’s H‑theorem laid the statistical foundation for entropy, revealing why the universe seems to flow forward in time. In this episode we trace how his insight sparked debates from Poincaré’s recurrence to black‑hole thermodynamics and even modern data science.

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    16 min
  • Einstein’s Light Quanta: How a 1905 Idea Turned Photons Into Particles

    Einstein’s 1905 insight that light comes in discrete packets—photons—challenged the prevailing wave model and laid the groundwork for quantum mechanics. This episode traces the birth of the photon concept, its experimental validation through the photoelectric effect, and how it sparked modern technologies like lasers, quantum cryptography, and superconducting qubits.

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    20 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.