Quantum physics describes the way the universe behaves
on the very smallest scales. Far below the limits of even
the most powerful microscopes, it governs the behaviors
and interactions of atoms and the particles from which
they are made—the fundamental building blocks of matter.
Scientists only confirmed the existence of subatomic
particles with J.J. Thomson’s discovery of the electron
in 1897, but the possibility that these tiny particles can
sometimes behave like waves, which is key to the strange
behavior of the quantum world, was only suggested by
Louis Victor de Broglie in 1924.