Are physicists really crazy?

Can we all agree that most physicists are a little bit crazy?


Well, in Isaac Newton's case, he wiated almost twenty years to publish his results from an experiment where he had formulated and numerically checked the gravitation law. His original conclusion was formulated by 1666, but wasn't published until s1687 in his book Principia for the pure reason that he could not justify his method of numerical calculation in which he considered Earth and the moon as point masses.


So, not only did Newton wait twenty years or so to publish his results, he also invented a type of calculus-based mathematics in order to solve his calculation problem.

Concluding, Newton's Law of Universal Gravitation states that:
Each mass particle attracts every other particle in the universe with a force that varies directly as the product of the two masses and inversly as the square of the distance between them. In equation form this looks like:

F=-G[(mM)/r^2]e_r.


What other equation have you seen that looks similar to this but applies to point charges?