Physical Review Letters

Physicists have resolved a 15-year debate over the proton's charge radius, with recent experiments favoring a smaller radius over new physics. Studies published in Nature and Physical Review Letters suggest the proton radius puzzle is settled, aligning with quantum mechanics rather than the outdated Bohr model.

Oobleck, a non-Newtonian fluid made from corn starch and water, exhibits unexpected behavior when dropped onto a surface, as revealed by recent research published in Physical Review Letters. The study highlights how its viscosity changes under force, distinguishing it from typical Newtonian fluids like water.