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Rational Thinker is a podcast dedicated to exploring the rich and often surprising history of science — the discoveries, the debates, and the remarkable individuals whose curiosity and perseverance transformed our understanding of the world. From the revolutionary insights of the Scientific Revolution to the groundbreaking breakthroughs of the modern era, each episode examines the human stories behind the ideas that shaped civilization. I invite my listeners to look beyond the textbook and engage with science not merely as a collection of facts, but as an evolving, deeply human pursuit of truth. Whether you are a lifelong student of history, a science enthusiast, or simply someone who wonders how we came to know what we know, this podcast offers thoughtful, well-researched narratives that illuminate the minds and moments that moved science forward.
24 Episodes
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In 1913, Danish physicist Niels Bohr proposed that electrons orbit atoms in fixed energy levels, where any jump between levels emits or absorbs a photon of light with an energy exactly equal to Planck's constant times its frequency. It was a revolution because it solved two problems. Under the previous model, orbiting electrons would quickly spiral into the nucleus, and also, spectral lines could now be accounted for (at least in light elements). But the model had its limits, and a French aristocrat would ultimately formulate a relation that would both show why Bohr's formula works intuitively, but also would ultimately usher in a new era of physics that would render the Bohr model obsolete.
By the 1750s, we had a pretty decent understanding of electricity. However, the theory was incomplete. This was demonstrated most precisely when Benjamin Franklin put a cork inside a charged metal can expecting it to be influenced by the can. However, the cork didn't move whatsoever. This confusion sparked a chain reaction of events that ultimately led to Coulomb's law, published in 1785.
Man, this video took me a while to make. It just may be my most ambitious project yet. Hopefully I didn't miss anything too important. If I did or made a mistake, feel free to let me know!
Johannes Kepler had the relative sizes of the orbits of our planets in the solar system mapped by the 1630s. The shape of the solar system had been known relatively well, but it was a shape without scale. Determining the size of the solar system was a much more challenging problem, mainly because there was no known way to make such a measurement. However, that all changed with the development of parallax and taking advantage of an even more fascinating phenomenon: the transit of Venus.
In 1875, French chemist Paul-Émile Lecoq de Boisbaudran discovered the element 'Gallium' after isolating it from a zinc blende ore. However, shortly after his publication, he received word from a Russian chemist with the name of "Mendeleeff" that claimed he had predicted such an element to exist 6 years earlier. This is the story of how that Russian chemist - and a fellow German chemist - turned rival - uncovered the periodic law of the elements and formulated them all into one cohesive unit, transforming chemistry forever.
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