What profession does Action at a distance and Albert Einstein have in common?
Action at a distance In physics, action at a distance is the concept that an object can be moved, changed, or otherwise affected without being physically touched (as in mechanical contact) by another object. That is, it is the nonlocal interaction of objects that are separated in space. Pioneering physicist Albert Einstein described the phenomenon as "spooky action at a distance".
Paul Harzer Paul Harzer (1857–1932) was a mathematician and astronomer best known for his papers arguing with Albert Einstein regarding the Sagnac effect and its relationship to Special Relativity. Harzer was Professor of Astronomy at the University of Kiel and Director of its observatory. His published article on the experiment of Franz Harress drew two reply articles from Einstein.