Is light a wave or a particle? Well, it's not a particle. The photoelectric effect can be explained with a wave model for light and a quantum model for matter.

In fact it can even be in infinitely many places at the same time, exactly as a wave. Hence the notion of wave-particle duality, which is fundamental to all quantum systems.

Light is everywhere,it illuminates our world, enables vision, and travels across galaxies. But what is light, really? Is it a wave or a particle? The answer is both,and neither, depending on how ...

The wave-particle duality is one of those essential pillars. Physics courses devote weeks to just introducing it – but there are still important aspects that can be covered in a short article.

Light is well known to exhibit both wave-like and particle-like properties, as imaged here in this 2015 photograph. What's less well appreciated is that matter particles also exhibit those wave ...

The wave function is a mathematical description of the external attributes of a particle: its position, momentum, and rotational characteristics.

In the traditional formulation of quantum mechanics, when a particle is measured -- meaning it is found to be in one particular location -- the wave function is said to collapse.

I HAVE been able to show that there does not exist a mutually definite correlation between the spin and the transformation properties of the wave function of an elementary particle, as generally ...

The classic quantum mechanics problem is a particle in a 1-D box. Here is a numerical solution to that problem.