The Irish mathematician and physicist William Rowan Hamilton, who was born 220 years ago last month, is famous for carving ...

The fuzzy quantum shape that describes the speed or location of a single particle, its wave function, has now been directly measured in the laboratory, giving this mathematical concept a small dose of ...

Physicists from the Canadian Institute for Measurement Standards are the first to measure a quantum mechanical wave function. And it only took 88 years from the formulation of Schroedinger’s equation!

It was shown in two earlier papers that, if u(x, t) = u(x1, x2, x3, t) satisfies the wave equation in the exterior of some fixed sphere r = a and vanishes for t ⩽ r, then ru(rξ, r + τ) ∼ f(ξ, τ) as r ...