Quantum mechanics has a reputation that precedes it. Virtually everyone who has bumped up against the quantum realm, whether ...

Bind an electron to a reference ion—the team used the “hydrogen-like” carbon nucleus, stripped down to a single electron. The nucleus of that ion has a known, precise mass.

Silver-110’s decay reveals a promising path to measure antineutrino mass. New data could reshape future neutrino studies.

Guest post by Andrew Grant. The electron has been weighed with unprecedented precision, researchers report February 19 in Nature.Its new and improved mass, 17 times as precise as the previous best ...

As electron mass is involved in fundamental physical constants, it is of significance to fundamental physics. A scale for absolute lightweights: Physicists used this Penning trap to determine the mass ...

The electron's mass is one of a few key parameters that govern the structure and properties of atoms, yet because the electron is so tiny, precisely measuring its atomic mass has been difficult.

The electron atomic mass presented in this Letter, combined with the Rydberg constant 6, the atomic mass of rubidium 27 and an atom interferometric measurement of h/m Rb (ref. 26), yields a value ...

Unlike most of us, subatomic particles don't gain weight asthey get older. The mass of these tiny bits of matter has remained constantover the last 6 billion years, recent astronomical ...

For context, that’s less than one-millionth the mass of an electron, which clocks in at a comparatively gargantuan 511,000 eV. So, yeah—neutrinos are ridiculously lightweight.

With the current data from the KATRIN experiment, an upper limit of 0.45 electron volt/c 2 (corresponding to 8 x 10-37 kilograms) could be derived for the neutrino mass.

The KATRIN experiment in Germany nearly halved the maximum possible mass for neutrinos, setting it at 0.45 electron volts.