Observable: What can be experienced
in some reality by various
persons, especially by some
scientific method, including apparatuses
like microscopes etc.
Many empirical sciences have special
techniques, methods, or tools to make observations in systematic ways
that make it likely the observations can be repeated by other people
qualified to make them, thereby giving them an intersubjective and
possibly objective status.
And in many empirical sciences, such as physics and chemistry, one of
the basic rules that makes these sciences empirical is that experiments
that cannot be repeated by others with the same kinds of observable
effects have no value as evidence.
Conversely, if an experiment generates observations that are new and
can be repeated by independent qualified others, the observations do
count as evidence for or against a theory that implies or denies their