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What (who) is relative biological effectiveness - definition
Relative biological effectiveness
In radiobiology, the relative biological effectiveness (often abbreviated as RBE) is the ratio of biological effectiveness of one type of ionizing radiation relative to another, given the same amount of absorbed energy. The RBE is an empirical value that varies depending on the type of ionizing radiation, the energies involved, the biological effects being considered such as cell death, and the oxygen tension of the tissues or so-called oxygen effect.
Educator effectiveness
IMPACT OF A TEACHER
User:Schmittkr17/sandbox/draft EducatorEffectiveness; Educator Effectiveness
Educator effectiveness is a United States K-12 school system education policy initiative that measures the quality of an educator performance in terms of improving student learning. It describes a variety of methods, such as observations, student assessments, student work samples and examples of teacher work, that education leaders use to determine the effectiveness of a K-12 educator.
Relative velocity
VELOCITY OF AN OBJECT OR OBSERVER B IN THE REST FRAME OF ANOTHER OBJECT OR OBSERVER A
Relative motion; Relative speed
The relative velocity \vec{v}_{B\mid A} (also \vec{v}_{BA} or \vec{v}_{B \operatorname{rel} A}) is the velocity of an object or observer B in the rest frame of another object or observer A.
