United colors United colors United colors Sentimental writers and orators sometimes ascribe meanings to the colors in Niels Bohr 1885 – 1962 Nicolas Carnot 1796 – 1832 Srinivasa Ramanujan 1887 – 1920 Max Planck 1858 – 1947 Rene Descartes 1596 – 1650 Archimedes 287 – 212 BC exp(ln(pi / 5)) Dmitri Mendeleev 1834 – 1907 Giordano Bruno 1548 – 1600 Albert Einstein 1879 – 1955 Ludwig Boltzmann 1844 – 1906 Marie-Sophie Germain 1776 – 1831 https://fr.wikipedia.org/wiki/Calculatrice Giordano Bruno 1548 – 1600 David Hilbert 1862 – 1943 scientific calculator https://fr.wikipedia.org/wiki/Calculatrice Charles Darwin 1809 – 1882 Pythagoras 570 – 495 BC Euclid 300 BC scientific calculator Galileo Galilei 1564 – 1642