Learn how to determine the mass-to-charge ratio (m/z) in a mass spectrometer! This guide walks you through the physics behind the process, from ion acceleration to detection, with practical insights ...

Scientists have released the most detailed analysis yet of how protons and neutrons acquire their mass, solving a decades-long puzzle that the Nobel Prize-winning Higgs mechanism could not explain.

Mass is mass is mass. Physicists have three different definitions of mass, all thought to be equivalent. Measurements of the distance between Earth and the moon confirm that two of those masses are ...

Physicists have taken one small-but-consequential step toward measuring the mass of an elusive "ghost particle" called a neutrino — an achievement that could poke a significant hole in the Standard ...

An astrophysicist has shown that gravity may be able to exist without mass, a theory that suggests dark matter may not be necessary to explain phenomena observed in our universe. Dark matter is a ...