The Origins of Quantum Physics

What is Wave-Particle Duality?

One of the most well-known ideas in quantum physics, and one of the ideas most frequently held up as an example of the mysterious nature of quantum physics, is that material objects exist simultaneously as particles and as waves. Material objects exist as particles in the sense that they can be assigned definite quantities like location and momentum, but they also exist as waves in the sense that they can be described as a propagating disturbance in some underlying (possibly very abstract) field.