<Tr> <Td> Gravitation </Td> <Td> General relativity (GR) </Td> <Td> gravitons (hypothetical) </Td> <Td> </Td> <Td> 1 r 2 (\ displaystyle (\ frac (1) (r ^ (2)))) </Td> <Td> ∞ </Td> </Tr> <P> The modern (perturbative) quantum mechanical view of the fundamental forces other than gravity is that particles of matter (fermions) do not directly interact with each other, but rather carry a charge, and exchange virtual particles (gauge bosons), which are the interaction carriers or force mediators . For example, photons mediate the interaction of electric charges, and gluons mediate the interaction of color charges . </P> <P> Gravitation is by far the weakest of the four interactions at the atomic scale, where electromagnetic interactions dominate . But the idea that the weakness of gravity can easily be demonstrated by suspending a pin using a simple magnet (such as a refrigerator magnet) is fundamentally flawed . The only reason the magnet is able to hold the pin against the gravitational pull of the entire Earth is due to its relative proximity . There is clearly a short distance of separation between magnet and pin where a breaking point is reached, and due to the large mass of Earth this distance is disappointingly small . </P> <P> Thus gravitation is very important for macroscopic objects and over macroscopic distances for the following reasons . Gravitation: </P>

The fundamental force that is currently the weakest of all is