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 beam of alpha particles ...

Ernest Rutherford ... atom that was similar to the solar system. Like planets, electrons orbited a central, sun-like nucleus. Acceptance of this model grew after it was modified with quantum ...

To explain how atoms were overall neutral, he proposed the “plum pudding model” in 1904. As the alpha ... atom is the way that most people think about atoms today. It is known as the ...