Judged: two independent readers; copy check clear.
apparent magnitude
apparent magnitude Apparent magnitude is the observed or estimated size of a measurement or metric, rather than its true value.
Apparent magnitude is the observed or estimated size of a measurement or metric, rather than its true value. In this source, it refers to how large an accuracy measure seems to be, even though that impression can be distorted by factors such as prevalence and an imperfect reference standard.