BUILDING THE UNIVERSE
Gravity: The most popular of the four fundamental forces and also the least understood by physicists out of the four. It is the weakest force out of the four but what makes it dominate the universe is its range. A gravitational field is thought to extend infinitely meaning that gravity can come into play even at large distances, unlike the strong and weak nuclear forces with the size of their ranges being of nuclear lengths (around 10 -15 m). What about the electromagnetic force (the force that is associated with magnets and electricity- yes, they are both interrelated)? The electromagnetic force has the same range as that of Gravitation, but, unlike Gravitation-which requires only mass,the electromagnetic force requires charges and because very few charges are separated(almost all charges clump together-positively charged proton and negatively charged electrons to form atoms), and they become neutral, meaning their effects would only be felt at extremely tiny distances. This leave