A technological revolution that is still playing out today began with new ideas about how atoms and subatomic particles work. Commentator Marcelo... One hundred years ago Niels Bohr introduced the ...

In the 1920s, Albert Einstein proposed a twist on the double-slit experiment. Rather than a wall with two fixed slits, he imagined a very light slit that would recoil when a single photon passed ...

Niels Bohr was born and educated in Copenhagen, Denmark. He lived, worked, and died there, too. But his mark on science and history was worldwide. His professional work and personal convictions were ...