Question

    Who measured the velocity of light first?

    A Galileo Correct Answer Incorrect Answer
    B Newton Correct Answer Incorrect Answer
    C Romer Correct Answer Incorrect Answer
    D Einstein Correct Answer Incorrect Answer

    Solution

    Galileo is often credited with being the first scientist to try to determine the speed of light. Galileo's experiment was carried out by the Accademia del Cimento of Florence, Italy, in 1667, with the lanterns separated by aboutonemile, but nodelaywas observed.The actualdelayinthisexperimentwouldhavebeen about 11 microseconds. The first quantitative estimateofthespeedalightwasmadein1676by Romer.

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