In 1962, V. A. Antonov did some remarkable simulations showing that in Newtonian mechanics, gravitating systems can violate the usual rules of thermodynamics. Instead of reaching equilibrium they c…| Azimuth
Nuclear physics is complicated compared to atomic physics, because the strong force is complicated compared to the electromagnetic force, and nucleons—protons and neutrons—are bag-like …| Azimuth
It looks like they’ve found protonium in the decay of a heavy particle! Protonium is made of a proton and an antiproton orbiting each other. It lasts a very short time before they annihilate …| Azimuth
Even though helium is the least reactive of the noble gases, you can make a molecule of two helium atoms! Yes, He2 is a thing! It’s called ‘dihelium’ or the helium dimer. But the …| Azimuth