Photo: Niels Bohr's research notes for his new atomic theory Rutherford's find came from a very strange experience. Everyone at that time imagined the atom as a "plum pudding." That is, it was roughly ...

NMAH copy purchased with funds from the S. Dillon Ripley Endowment. This comprehensive scientific history presents for the first time a detailed and comprehensive study of the Bohr atom in all its ...

Picture an atom, and you may imagine spherical electrons orbiting a nucleus packed with particles like neutrons. Only certain orbits - quantum levels - are possible. It's a simplistic model, yet ...

Danish physicist and Nobel Laureate Niels Henrik David Bohr's atomic model, popularly called the Bohr's Atomic Model, is search engine major Google's new doodle. The doodle marks Bohr's 127th birth ...

Google marks the 127<sup>th birthday of renowned physicist Niels Bohr by dedicating its homepage to a doodle for the Nobel Laureate displaying one of his landmark discoveries. The doodle showcases ...

Part of Physics (Single Science) Unit 1: Atomic and nuclear physics Most of the mass and all of the positive charge of an atom is in the nucleus. Most of an atom is empty space, (a vacuum). In 1897, ...