SUMMARY: Electromagnetism is a strong force that causes protons in an atom's nucleus, such as Helium, to repel each other.

HEISENBERG has discussed the hypothesis that the nucleus of an atom is composed of neutrons and protons only, the neutron being regarded as a fundamental entity and not as a combination of an electron ...

No one really knows what happens inside an atom. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Scientists have caught fast-moving hydrogen atoms—the keys to countless biological and chemical reactions—in action. A team led by researchers at the Department of Energy's SLAC National Accelerator ...

This video explores the basic components of an atom—protons, neutrons, and electrons—and discusses the inaccuracies of the ...

Physicists around the world are cracking open the proton, within the nucleus of the atom, to see what's inside. The proton is a fundamental building block of the atomic nucleus, and among other things ...

Physics at the smallest scales is a challenge of observation: Particles are often fleeting, and the forces that govern their behavior are nearly imperceptible. But now, by exploiting decades-old data ...

No one really knows what happens inside an atom. But two competing groups of scientists think they've figured it out. And both are racing to prove that their own vision is correct. Here's what we know ...

Since the discovery of radioactivity in the 19th century, humanity has been forced to reckon with an uncomfortable but sobering truth: much of the matter we find today will eventually decay away. This ...

The observable universe is estimated to contain about 10 53 kilograms of ordinary matter, most of that in the form of some 10 80 protons and neutrons, which, along with electrons, are the ingredients ...