Born in Manchester in 1856, Thomson showed exceptional talent in science. Graduated from Trinity College, Cambridge with mathematics degree in 1880. Married Rose Elisabeth Paget in 1890, had two children who became Nobel Prize winners
Born in Rome in 1901, became introverted due to secular school. Showed precision and originality in adolescent talks. Won physics exam in 1918 with sound characteristics essay. Received magna cum laude doctorate from Scuola Normale Superiore in 1922
Atoms consist of protons, neutrons, and electrons. Protons have positive charge, electrons have negative charge. Neutrons are neutral, protons and neutrons are about same size. Electrons orbit nucleus, not stick to it
Born in Copenhagen in 1885 to a distinguished physiologist father. Developed Bohr model of atom in 1911 with quantized energy levels. Won Nobel Prize in Physics in 1922 for atomic structure work. Collaborated with Heisenberg on Copenhagen interpretation of quantum mechanics
Born in Copenhagen in 1885 to renowned physiology professor Christian Bohr. Studied physics at Copenhagen University from 1903 to 1911. Discovered Bohr–van Leeuwen theorem in his doctoral dissertation
Dalton proposed first complete atomic theory with indivisible particles. Thomson's plum pudding model showed electrons floating in positive charge soup. Rutherford introduced nucleus with electrons surrounding it. Bohr's model showed electrons in circular orbits with energy levels