"Understanding these cosmic rays allows us to unveil big particle accelerators in the universe that are often associated with ...

When theorists try to predict the energy of an electron in some experiment, they don't have to calculate the effect of every conceivable particle in huge numbers, just those particles whose mass ...

Scientists can determine the mass of subatomic particles that are built from quarks by looking at the particles' energy and ...

What does increase dramatically is the energy (and the mass). At the beginning of an experiment, a beam of electrons may have a rest energy of 1/2 million electron volts; it is directed through a ...

Each particle has its own charge and its own mass. The mass of an electron is very small compared to a proton or a neutron. 1 840 electrons have the same mass as 1 proton or neutron. Since the ...