"Η θεωρία της σχετικότητας."

Translation: The theory of relativity.

[Thelmaniac]

What about "the relativity theory" ?

[alainPierrot]

I guess σχετικότητα should be marked as a new word…

[robert672165]

science skill, not philosophy.
Or, maybe philosophers have their own theories of relativity?

[Daimon-Dave]

Einstein's work has a strong philosophical side as far as I know.

Look into it, is awesome.