1. To try or to ascertain by an experiment, or by a test or standard; to test; as, to prove the strength of gunpowder or of ordnance; to prove the contents of a vessel by a standard measure.
Thou hast proved mine heart.
Ps. xvii. 3.
(Webster's 1913)
Which makes sense to me. Try something you think might work, then test it—is just plain old experimental science.
Prove (?), v. t.
1. To try or to ascertain by an experiment, or by a test or standard; to test; as, to prove the strength of gunpowder or of ordnance; to prove the contents of a vessel by a standard measure.
Thou hast proved mine heart. Ps. xvii. 3.
(Webster's 1913)
Which makes sense to me. Try something you think might work, then test it—is just plain old experimental science.