“With the [atomic] bomb we dropped in Nagasaki, it killed everybody within a mile radius,” Morse told TIME on Friday, adding that a hydrogen bomb’s reach would be closer to 5 or 10 miles.

Spectroscopic measurements of proton radius come courtesy of the Lamb shift in hydrogen’s atomic-energy levels. This is a result of the electron (or muon) interacting with the quarks inside a proton ...

This is the radius which the charge of the positive hydrogen nucleus assumes. To this end, they have investigated tiny details in the atomic structure, using muonic hydrogen, where it is not an ...

This is the blast radius of Ivy Mike — the first (but ... to see whether those match the profile of an atomic bomb or a hydrogen bomb. The Preparatory Commission for the Comprehensive Nuclear ...

The precise measurement of states in atomic and molecular systems can help to validate fundamental physics theories and their ...

The nucleus of a hydrogen atom consists of a single ... from an electron–proton scattering experiment Atomic physicists determine the proton radius by measuring the energy difference between ...