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as well, the chaotic jangle of microscopic particles was christened Brownian motion in his honor. Much effort throughout the nineteenth century went into explaining it, and by the 1860s at least three natural philosophers independently suggested that Brownian motion was caused by the collision of the suspended particles with invisible molecules.* This would turn out to be the correct explanation, but at the time it was speculation, which met fierce objections. A legitimate calculation of Brownian motion, not dissimilar in spirit to the one Einstein would perform in 1905, was attempted in 1900 by one Felix Exner. Unfortunately for Exner, he got the wrong answer. As the story goes, Einstein wrote his paper “blissfully unaware of the detailed history of Brownian motion,” a claim that he himself also made to Conrad Habicht. According to this version, he not only predicted the phenomenon but explained it as well. Maybe. To be sure, Einstein omits any mention of Brownian motion in the title of his paper, remarking only in the first paragraph, “It is possible that the motions to be discussed here are identical with the so-called Brownian molecular motion; however, the data available to me on the latter are so imprecise that I could not form a judgement on the question.” On the other hand: From Maurice Solovine we do know that a few years earlier the Olympians had pounced on and devoured the great
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Tony Rothman (Everything's Relative: And Other Fables from Science and Technology)