For more than a decade, physicists have faced a puzzling situation: the size of the proton, the nucleus of the hydrogen atom, ...

New research conducted by nuclear physicists is using a method that connects theories of gravitation to interactions among the smallest particles of matter. The result is insight into the strong force ...

"To monitor the movement of the charge, you need a special type of organic molecule that can attach a proton in two different locations that are easily differentiated by the color of light they absorb ...

Being able to see inside an object is essential to understanding how it works. X-rays revolutionized medicine by giving doctors a noninvasive way to look beneath the skin — to spot broken bones, ...

Striving for agreement between theory and experiment and pushing the boundaries of precision are important parts of the scientific process. With each step in this process we move closer to ...

Nonconformists could take a page from the proton’s playbook: The subatomic particle is once again resisting scientists’ attempts to size it up. Everyone agrees the proton is tiny: Its radius is less ...