The classical scientific theories by which we understand the world around us do not hold good at the subatomic level. There, ...

Five years later, scientists were able to peer inside a hydrogen atom ... The model has been superseded since Niels Bohr first proposed it in 1913, as our understanding of the quantum world ...

Quantum mechanics, or quantum physics ... The Heisenberg-Schrödinger model of the atom, in which each electron acts as a wave around the nucleus of an atom, replaced the earlier Bohr model.

These “quanta of light” were an early step on the road to quantum theory. > 1913 Niels Bohr produces a quantum description of the atom in which ... is also a quantum mechanical phenomenon.

For example, the oxygen atom has eight electrons ... Eventually, the much more complicated quantum mechanical model emerged, superseding the Bohr model. But because things get far less neat ...

Did these researchers truly just crack our fundamental concepts of (quantum) physics wide open ... in the photonic energy getting absorbed by an atom, boosting the energy state of its electron ...

The new book, Women in the History of Quantum Physics, spotlights the oft-forgotten contributions of women scientists in the field.

When a molecule absorbs light, it undergoes a whirlwind of quantum-mechanical transformations. Electrons jump between energy ...

If the atom decays, the Geiger counter triggers the release of poison, killing the cat. Quantum mechanics suggests that, ...

How could Arrhenius understand the basics of the greenhouse effect before quantum mechanics was even discovered ... a team of researchers used a simple model to prove that the logarithmic scaling ...