An experiment is a question which science

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An experiment is a question which science poses to Nature and a measurement is the recording of Nature's answer.

Max Planck

April 22, 1858 – October 3, 1947
Max Karl Ernst Ludwig Planck, was a German theoretical physicist whose discovery of energy quanta won him the Nobel Prize in Physics in 1918. Planck made many contributions to theoretical physics, but his fame as a physicist rests primarily on his role as the originator of quantum theory, which revolutionized human understanding of atomic and subatomic processes.