COINCIDENCE definition and meaning

Coincidence and Counterfactuality: Plotting Time and Space in coincidence Coincidence correlation with picosecond timing can be used to determine if one is actually observing a single quantum system in the form of a single photon coincidence Where does the noun self-coincidence come from? The earliest known use of the noun self-coincidence is in the 1900s OED's earliest evidence for self-

coincidence The fact that solar eclipses happen at all is a bit of a numerical coincidence It just so happens that the Sun is approximately 400 times