For over a century, physics has operated under a strict double standard. Everyday objects like baseballs and planets move according to the predictable laws of classical mechanics, while subatomic ...

During its teenage and young adult years—what is now referred to as its “classical” period—physics made a lot of mistakes. In the old physics, mass and energy were separately conserved; particles’ ...

* There are probably many notions of what determinism means, but let's distinguish two. The crucial thing is that the universe can be divided up into different moments of time. (The division will ...

Mathematical classical mechanics is underpinned by Hamiltonian flows on symplectic and more general Poisson manifolds, with conserved energy functions defining vector fields whose integrability is ...