The “lead” of a pencil is actually made of a substance called graphite which is made of carbon atoms. The picture shows a close-up of one carbon atom. A hydrogen atom has one proton as the nucleus and ...

Protons have a charge of +1. Electrons have a charge of -1. Neutrons are neutral, as its name implies. A stable atom has a net charge of 0. In other words, it has an equal number of protons and ...

The film report discusses the nature of electricity, explaining its significance in daily life and its presence in various ...

A neutron star's almost incomprehensible density causes protons and electrons to combine into neutrons—the process that gives such stars their name. The composition of their cores is unknown ...

Since electrons have almost no mass, it seemed that something besides the protons in the nucleus were adding to the mass. One leading explanation was that there were electrons and additional ...

The atom is a complex system of particles. It's made up of a central nucleus consisting of protons and neutrons, called ...

This technique involves injecting a malignant tumour with non-radioactive boron ... with the neutrons, triggering the release of high-energy alpha particles, comprising two protons and two ...

The interactions between quarks within a proton and the quarks of other protons and neutrons in atomic nuclei are notoriously difficult to fully model. To bring some clarity to the problem ...