What it’s about: North Korea may be proud of its nuclear program, but it was nearly beaten to the punch a decade earlier by a teenage boy. In 1993, 17-year-old David Hahn tried (and nearly ...

But here’s where it starts to get tricky. The traditional atom model that shows electrons orbiting a central nucleus the way planets orbit the sun is a perfectly reasonable picture, according to ...

Bohr’s Model of an Atom: Danish Physicist Niels Bohr received his Ph.D. from the University of Copenhagen in 1911. In 1922, he was awarded the Nobel Prize in Physics for his work on the atom’s ...