『Rational Thinker』のカバーアート

Rational Thinker

Rational Thinker

著者： Rational Thinker
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About the history of science and the people who pushed science forward.2017-2026 Rational Thinker 世界 地球科学 物理学 科学
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  • How Electricity Was Discovered

    How Electricity Was Discovered
    2026/05/14
    In 600 BC, Greek philosopher Thales of Miletus noticed that the gemstone amber attracted light objects when it was rubbed against a cloth. Unbeknownst to him, he had discovered the phenomenon of static electricity. But how did humanity progress from this knowledge of a certain gemstone to powering machines with batteries? The answer lies in two centuries of innovation starting shortly after the beginning of the scientific revolution. This video doesn't cover everything, but does cover the most important steps during the early era of electricity, starting from William Gilbert and ending with Michael Faraday. Keywords for search: Otto von Guericke, Francis Hauksbee Hawksbee, electromagnetism, magnetism, electric field, electron, magnetic field, electromagnetic, Stephen Gray, John Godfrey, Granville Wheler, Charles du Fay, Dufay, Leyden jar, von Kleist, van Musschenbroek, Dalibard, Benjamin Franklin, kite experiment, lightning, conduction, insulator, conductor, vitreous, resinous, luigi galvani, alessandro volta, wet pile, oersted, transformer, generator 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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    22 分
  • How Absolute Zero Was Discovered

    How Absolute Zero Was Discovered
    2026/05/14
    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 分
  • How Oxygen Was Discovered

    How Oxygen Was Discovered
    2026/05/14
    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 分
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