4. Weak Nuclear Force: This force appears only in certain nuclear processes such as the β-decay of a nucleus. In β-decay, the nucleus emits an electron and an uncharged particle called neutrino. This particle was first predicted by Wolfgang Pauli in 1931.
Name Gravitational force
Weak nuclear force
Electromagnetic force
Relative Strength |
Range |
Operates among |
|
|
All objects in the |
|
Infinite |
universe |
10 – 39
10 – 13
10 – 2
Some elementary particles, particularly Very short, Subnuclearsize(-10-16 m electron and neutrino)
Infinite Charged particles
Strong nuclear force |
1 |
Nucleons, heavier
Short, nuclear size(- elementary particles
|
|
|
10-15 m) |