Researchers at the Large Hadron Collider found evidence of an unprecedentedly heavy and exotic form of antimatter in the ...

But there is a bit of a problem, in that the two descriptions of the nucleus of an atom don't sit too well together. Physicists gain knowledge of atomic nuclei largely by bombarding them with ...

The number of protons is what defines the element, i.e. an atom with six protons in its nucleus will always be carbon, and uranium will always have 92 protons. The total number of particles in the ...

the electron from each atom feels an attraction from the proton in the other atom's nucleus. This attraction pulls the atoms together. The electrons end up being shared by the atoms in a region around ...

The atom's nucleus and electrons are held together by the electromagnetic force—the positive charges of the protons balance the negative charges of the electrons. Neutrons have no charge.

In 1919 Rutherford had discovered the proton, a positively charged particle within the atom's nucleus. But they and other researchers were finding that the proton did not seem to be the only ...

The IAEA's NUCLEUS information resource portal provides access to over 100 scientific, technical and regulatory resources, including databases, applications, publications and training material. As it ...

Imagine, if you will, that you could see within an atom; at its core is the nucleus, containing subatomic particles called ...