One of the four main forces, this is the nuclear force relating to radioactivity and particles of spin ½, which means they look the same only after two turns.
Weak nuclear force Term Timeline in A Brief History of Time
The timeline below shows where the term Weak nuclear force appears in A Brief History of Time. The colored dots and icons indicate which themes are associated with that appearance.
...at some high energy, the strong nuclear force would be weakened, and the electromagnetic and weak nuclear force would strengthen, so that all three would be equal. In this theory, they could thus... (full context)
...inflationary idea states that while expanding rapidly, particles had enough energy for the strong and weak nuclear forces and electromagnetic force to be unified in a single force. As the universe cooled, these... (full context)
...does eventually freeze, so would the symmetry eventually break between the strong nuclear force, the weak nuclear force , and the electromagnetic force. This would bring the universe back to the slower rate... (full context)