The virial theorem states that the total kinetic energy of the objects in a
spherical, self-gravitating, stable assembly is equal to negative 1/2 times the total gravitational potential energy, if the objects can be assumed to have equal masses.
... power for any period of time without a legitimate basis of authority.
The first to have the title of "Tyrant" was Pisistratus in 560 BC.
In modern times Tyrant has ...