Positronium is made by swapping the proton in a hydrogen atom for a positron. Precision laser spectroscopy of ground-state electromagnetic moments and nuclear charge radii of indium shows that 100 ...

Other systems may also be referred to as "hydrogen-like atoms", such as muonium (an electron orbiting an antimuon), positronium (an electron and a positron), certain exotic atoms (formed with other ...

This shift is something like a millionth of the energy of a typical electronic state in an atom or molecule, but measuring energy differences at that level is pretty routine for atomic physicists.

When building an atom, pay close attention to the particles' electrical charges. Protons have a charge of +1. Electrons have a charge of -1. Neutrons are neutral, as its name implies. A stable ...

A single negative electron and a positively charged antimatter positron make up the unusual atom known as positronium. Researchers believe that by assisting others in their exploration of unusual ...

Positronium is an exotic atom composed of a single negative electron and a positively charged antimatter positron. It is ...

The nucleus is very small compared to the atom as a whole: as electrons are even smaller, most of an atom is empty space the diameter of a nucleus can be 100,000 times less than the diameter of an ...

There's too much antimatter in cosmic rays, showers of charged particles that pelt Earth. Could this be explained by ...

The high velocity means that molecules can be destroyed and removed from the measurement background. As a result, concentrations down to one atom in 1017 atoms are measurable. Many rare isotopes, such ...

Narrative screenwriters and playwrights tell stories through a character’s experiences. Through this, we as an audience step into someone else’s shoes, walk through their world, and see life ...