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Rational Thinker

Rational Thinker

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 About the history of science and the people who pushed science forward.2017-2026 Rational Thinker
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  • How Absolute Zero Was Discovered

    How Absolute Zero Was Discovered
    May 14 2026
    Absolute zero is the theoretical limit to how cold temperature can reach. The quest to calculate the value of it started in the 1700s, but wasn't accurately done so until the mid 1800s by British physicist William Thomson. Hosted by Simplecast, an AdsWizz company. See https://pcm.adswizz.com for information about our collection and use of personal data for advertising.
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    9 min
  • How Oxygen Was Discovered

    How Oxygen Was Discovered
    May 14 2026
    In the 1770s, a revolution in chemistry had just begun, starting in Uppsala, Sweden. A young apothecary named Carl Wilhelm Scheele began a series of experiments that led to the eventual downfall of an entire theory of fire that had dominated chemistry for a century. This theory was known as the theory of phlogiston; phlogiston was an invisible substance that released from materials when they burned and was absorbed by air or other substances. Scheele supported phlogiston from his results, but his went unpublished for five years, leading to another chemist, Joseph Priestley, getting credit for the discovery of what Scheele called "fire air." This is the story of how Scheele, Priestley, and a French chemist named Antoine Lavoisier discovered a substance that would eventually tackle the theory of phlogiston and replace it with a new theory of oxygen. Hosted by Simplecast, an AdsWizz company. See https://pcm.adswizz.com for information about our collection and use of personal data for advertising.
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    18 min
  • How the Atom Was Split for the First Time

    How the Atom Was Split for the First Time
    May 14 2026
    Ever since the discovery of the proton in 1919 by Ernest Rutherford, scientists had been on a mission to break atoms apart, splitting them into their smaller components in hopes of changing elements into others. This was first successfully done by two of Rutherford's pupils, John Cockcroft and Ernest Walton, in 1932 after their invention of the world's first particle accelerator. Hosted by Simplecast, an AdsWizz company. See https://pcm.adswizz.com for information about our collection and use of personal data for advertising.
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    8 min
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