Seated at the head of the periodic table, hydrogen is the lightest element, a minimalist atom consisting only of a proton and an electron. It is not scarce: three-quarters of the mass of the ...

But a few years back, researchers put a heavier version of the electron, called a muon, in orbit around a proton. This formed an exotic, heavier version of the hydrogen atom.

Operators of the world's largest atom smasher say they will try to collide proton beams at record high energy in one week. The European Organization for Nuclear Research, or CERN, says beams have ...

An atom consists of a heavy center, called the nucleus, made of particles called protons and neutrons. An atom has lighter ...

This is precisely the difference between the new, smaller, dimension of the proton, the nucleus of the hydrogen atom, and the value which has been assumed so far. Instead of 0.8768 femtometres it ...

When an atom is impacted by a fast-moving proton, one of its orbiting electrons may be knocked away, leaving behind a positively-charged ion. To understand this process, it is important for ...

Explore the fundamental components of an atom: protons, neutrons, and electrons. This video discusses why the traditional model of the atom is inaccurate, highlighting the unpredictable nature of ...

The world's largest atom smasher broke the record for proton acceleration Monday, sending beams of the particles at 1.18 trillion electron volts around the massive machine.

Scientists say the world's largest atom smasher has broken the record for proton acceleration, sending beams of the particles at 1.18 trillion electron volts.

The size of an atom is only a few angstroms at most - there are 10 billion angstroms in 1 metre. This video also looks at the basic parts of an atom (protons, neutrons and electrons) and why the ...

Advanced mathematical analysis of the ionisation of a helium atom by an impacting proton has revealed where discrepancies arise between experiments and existing theoretical calculations of the ...

If you modeled a hydrogen atom as Bohr did, but took the ratio of a ground-state electron's velocity and compared it to the speed of light, you'd get a very specific value, which Sommerfeld called ...