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weak force

weak force

2 8.3
A basic interaction in nature that causes some radioactive decay and acts on particles like neutrinos
  • noun
  • /wiːk fɔrs/
  • Specialized
translation icon : fuerza débil
  • Nowadays, it is well known that most of the phenomena in the Universe can be interpreted successfully using one or more of the following interactions: (1) gravity; (2) electromagnetism; (3) weak force; (4) strong force.
  • electromagnetic and weak force

The strong force has gluons, the weak force has W&Z; bosons.

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Examples

  • Because its effective range is limited to distances of one one-thousandth the size of the proton, the weak force only rarely affects the motions of quarks—and it is never the agent that binds matter together.

    Academic text (2006)
  • There's a thing called the weak force, which causes radioactivity.

    Fiction book (1999)
  • Why is gravity such a weak force?

    Blog text (20)
  • When a nucleus disintegrates, it is usually the weak force at work.

    Academic text (2006)
  • The weak force plays a crucial role in the process of beta decay in atomic nuclei.

  • During radioactive decay, interactions occur via the weak force, influencing particle transformation.

  • In particle physics, the weak force is responsible for the decay of unstable particles into more stable forms.

Synonyms

weak interaction
vsweak force
  • Specialized
1 8.1

A basic force that makes some tiny particles change and causes some radioactive decay

is broader, focusing on interactions between elementary particles like neutrinos rather than mediation details

Surface Forms

weak force singular
weak forces plural

Morphology

weak + force

The phrase is compositionally clear: 'weak' modifies 'force', so a learner who knows both words can infer it means a force that is weak. However, the term refers to a specific technical concept (the weak nuclear interaction responsible for certain particle decays) whose detailed meaning and implications are not predictable from the simple adjective+noun, making it only partially transparent to a B1 learner.

Etymology

Weak force comes from early studies of atoms, when scientists found this force was much smaller than the 'strong' force that holds the atom together. It acts only at very small distances and makes some tiny particles change or 'decay', so the name helps you remember it is the force that is 'weaker' than the others.