A force-directed graph can involve forces other than mechanical springs and electrical repulsion; examples include logarithmic springs (as opposed to linear springs) and magnetic or gravitational fields.

She and Frisch had discovered the reason that no stable elements beyond uranium (in atomic number) existed naturally; the electrical repulsion of so many protons overcame the strong nuclear force.

A force-directed graph can involve forces other than mechanical springs and electrical repulsion.

Nevertheless, they are strong enough to bind neutrons and protons over short distances, and overcome the electrical repulsion between protons in the nucleus.

There were also long sea voyages in enormous, many-decked boats of incredible swiftness, and trips over wild regions in closed projectile-like airships lifted and moved by electrical repulsion.

In the resulting liquid-drop model, the nucleus has an energy which arises partly from surface tension and partly from electrical repulsion of the protons.

The helium nuclei there are obviously engaged despite their mutual electrical repulsion.

The electrical repulsion no longer hinders the aggregation of particles and they can then coalesce to form a flocculent precipitate that is easy to filter.

It is this 'strong nuclear force' that holds the nucleus together but protons only feel it when they are in close proximity; once apart they feel the electrical repulsion.

However, incredibly strong electrical repulsions keep the nuclei at atom's length.