Science glossary film: Subatomic particles

Particles that make up the structure of atoms, such as neutrons, protons and electrons. Neutrons and protons are roughly the same mass, while electrons are much lighter. In the early 20th century these were thought to be the only subatomic particles, but we now know others exist, which include neutrinos, antielectrons, antiprotons, antineutrons, muons and bosons.

Neutrons and protons are roughly the same mass, while electrons are much lighter. In the early 20th century these were thought to be the only subatomic particles, but we now know others exist, which include neutrinos, antielectrons, antiprotons, antineutrons, muons and bosons.