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  • Tower of Pisa, Italy
    Rights: Stefano Marinari, licensed through 123rf Ltd. Published 10 June 2015 Size: 190 KB Referencing Hub media

    Galileo Galilei is said to have dropped balls of different masses from the Tower of Pisa to show that their speed of descent was independent of their mass. Nigel Latta points out, this is considered an apocryphal story, and was likely a ‘thought experiment’.

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