Niels Henrik David Bohr was a Danish theoretical physicist who made foundational contributions to understanding atomic structure and quantum theory, for which he received the Nobel Prize in Physics in 1922. He was also a philosopher and a promoter of scientific research. October 7, 1885 – 1962; died at about 76. Alive at the same time as Donald Trump, Leo Tolstoy, Pablo Picasso, Friedrich Nietzsche, and Pope Francis. Wiki link