Mmastodon SciencePhysics first seen 4 d ago, last 3 d ago, peak #2

New Episode Retells How the Atomic Nucleus Was Discovered

Original: New episode: How the Nucleus Was Discovered. Manchester, 1909: Ernest Marsden, a 20-year-old student, counts scintillati

A new episode recounts the 1909 Manchester experiment in which young physicist Ernest Marsden, counting scintillations in the dark, found roughly one in 8,000 alpha particles bouncing straight back from a metal plate. Ernest Rutherford spent two years on the result before answering with a formula that revealed the atom's dense nucleus, reshaping physics.

Why now: The story of how the nucleus was discovered remains a compelling piece of physics history being retold for a general audience right now.

Ernest MarsdenErnest RutherfordUniversity of Manchester

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• New episode: How the Nucleus Was Discovered. Manchester, 1909: Ernest Marsden, a 20-year-old student, counts scintillations in the dark and finds one alpha particle in 8,000 bouncing straight back from a metal plate. Rutherford takes two years and answers with a formula: the… · principiah · 3

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