weak interactions

Weak interactions are one of the four fundamental forces in nature, responsible for processes like radioactive decay. They are called "weak" because they are much less powerful than gravity or electromagnetism. These interactions occur at the subatomic level, involving particles like quarks and leptons, and are essential for changing one type of particle into another. For example, they enable a neutron to decay into a proton, emitting a particle called a neutrino. Despite their name, weak interactions play a crucial role in the universe's evolution, including nuclear fusion in stars and certain types of particle reactions.