Englishfor English speakers
ascertained
—
adjective
(= discovered, observed)
discovered or determined by scientific observation
variation in the ascertained flux depends on a number of factors
the discovered behavior norms
discovered differences in achievement
no explanation for the observed phenomena
fact
Noun
—
A fact is something that is true.
That is not just my idea, it is a fact.
—
A fact is a piece of information.
He collects little-known facts.