Einstein's miracle year - Larry Lagerstrom

2,681,016 views ・ 2015-01-06

TED-Ed


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As 1905 dawned,
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the soon-to-be 26-year-old Albert Einstein faced life as a failed academic.
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Most physicists of the time would have scoffed at the idea
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that this minor civil servant could have much to contribute to science.
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Yet within the following year,
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Einstein would publish not one,
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not two,
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not three,
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but four extraordinary papers, each on a different topic,
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that were destined to radically transform our understanding of the universe.
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The myth that Einstein had failed math is just that.
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He had mastered calculus on his own by the age of 15
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and done well at both his Munich secondary school
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and at the Swiss Polytechnic,
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where he studied for a math and physics teaching diploma.
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But skipping classes to spend more time in the lab
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and neglecting to show proper deference to his professors
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had derailed his intended career path.
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Passed over even for a lab assistant position,
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he had to settle for a job at the Swiss patent office,
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obtained with the help of a friend's father.
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Working six days a week as a patent clerk,
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Einstein still managed to make some time for physics,
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discussing the latest work with a few close friends,
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and publishing a couple of minor papers.
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It came as a major surprise
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when in March 1905 he submitted a paper with a shocking hypothesis.
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Despite decades of evidence that light was a wave,
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Einstein proposed that it could, in fact, be a particle,
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showing that mysterious phenomena, such as the photoelectric effect,
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could be explained by his hypothesis.
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The idea was derided for years to come,
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but Einstein was simply twenty years ahead of his time.
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Wave-particle duality was slated to become a cornerstone of the quantum revolution.
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Two months later in May, Einstein submitted a second paper,
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this time tackling the centuries old question of whether atoms actually exist.
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Though certain theories were built on the idea of invisible atoms,
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some prominent scientists still believed them to be a useful fiction,
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rather than actual physical objects.
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But Einstein used an ingenious argument,
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showing that the behavior of small particles
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randomly moving around in a liquid, known as Brownian motion,
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could be precisely predicted
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by the collisions of millions of invisible atoms.
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Experiments soon confirmed Einstein's model,
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and atomic skeptics threw in the towel.
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The third paper came in June.
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For a long time,
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Einstein had been troubled by an inconsistency
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between two fundamental principles of physics.
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The well established principle of relativity,
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going all the way back to Galileo,
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stated that absolute motion could not be defined.
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Yet electromagnetic theory, also well established,
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asserted that absolute motion did exist.
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The discrepancy, and his inability to resolve it,
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left Einstein in what he described as a state of psychic tension.
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But one day in May,
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after he had mulled over the puzzle with his friend Michele Besso,
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the clouds parted.
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Einstein realized that the contradiction could be resolved
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if it was the speed of light that remained constant,
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regardless of reference frame,
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while both time and space were relative to the observer.
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It took Einstein only a few weeks to work out the details
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and formulate what came to be known as special relativity.
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The theory not only shattered our previous understanding of reality
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but would also pave the way for technologies,
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ranging from particle accelerators,
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to the global positioning system.
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One might think that this was enough,
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but in September,
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a fourth paper arrived as a "by the way" follow-up to the special relativity paper.
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Einstein had thought a little bit more about his theory,
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and realized it also implied that mass and energy,
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one apparently solid and the other supposedly ethereal,
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were actually equivalent.
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And their relationship could be expressed in what was to become the most famous
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and consequential equation in history:
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E=mc^2.
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Einstein would not become a world famous icon for nearly another fifteen years.
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It was only after his later general theory of relativity was confirmed in 1919
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by measuring the bending of starlight during a solar eclipse
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that the press would turn him into a celebrity.
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But even if he had disappeared back into the patent office
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and accomplished nothing else after 1905,
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those four papers of his miracle year
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would have remained the gold standard of startling unexpected genius.
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