Albert Einstein said it couldn’t be done, but now the velocity of a microscopic particle as it zigzags through air has been directly measured. The same technology used to make the measurement may ...

Ars Technica has been separating the signal from the noise for over 25 years. With our unique combination of technical savvy and wide-ranging interest in the technological arts and sciences, Ars is ...

In 1907, Albert Einstein predicted that the kinetic energy of a particle in a gas would depend solely on its temperature, not its size or environment. The 'equipartition theorem' has been a mainstay ...

A century after Albert Einstein said we would never be able to observe the instantaneous velocity of tiny particles as they randomly shake and shimmy, so called Brownian motion, physicist Mark Raizen ...