Mach's principle is a hypothesis first stated by Ernst Mach in 1893, which states that:
"The inertia of any system is the result of the interaction of that system and the rest of the universe. In other words, every particle in the universe ultimately has an effect on every other particle."
... first to have the title of "Tyrant" was Pisistratus in 560 BC.
In modern times Tyrant has come to mean a dictator who rules with cruelty.
Bullying is a form of ...