A proton isn't just three quarks and gluons, but a sea of dense particles and antiparticles inside. The more precisely we look at a proton and the greater the energies that we perform deep inelastic ...

Coulomb attraction, also known as electrostatic attraction, is a fundamental force that plays a crucial role in the interactions between nanoparticles. It is the attractive force experienced by ...

An atom is electrically neutral which means that there are identical numbers of protons and electrons. Positive charge of protons is composed of negative charge of electrons. It has no electrical ...

Question: when is a strong force not a strong force? Answer: when it’s anywhere outside the atomic nucleus. That at least is the case with the strong nuclear force, one of four fundamental forces of ...

Matter particles are only one part of the recipe for everything students see around them. The particles in matter must interact; otherwise the universe would just be one big collection of quarks and ...

If you took introductory physics, you learned about the “fundamental forces.” It goes something like this: All interactions are the result of one or more of five basic forces: strong nuclear, weak ...

Physicist Markus Aspelmeyer vividly remembers the day, nearly a decade ago, that a visitor to his lab declared the gravitational pull of his office chair too weak to measure. Measurable or not, this ...

The strong force is an enigma. Through gluons, it binds together quarks, one of the two basic building blocks of matter, into the protons and neutrons at the center of every atom. True to its name, it ...

As its name suggests, dark matter -- material which makes up about 85% of the mass in the universe -- emits no light, eluding easy detection. Its properties, too, remain fairly obscure. Now, a ...