Tendency, coincidence and background evidence

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-

where Δt is the resolving time of the coincidence counting system between the two detectors If both detectors are set to respond to both gamma rays, the coincidence coincidence what a coincidence! welch ein Zufall! it is no coincidence that … es ist kein Zufall, dass …, es ist nicht von ungefähr, dass …