EXPERIMENT

an operation designed to discover some unknown truth, principle, or effect, or to establish it when discovered. It differs from observation in the fact that the phenomcna observed are, to a greater or le extent, controlled by human agency. Mix per i ment distinguishes the modern method of investigating nature, and to it we owe the rapid made strides in chemistry and physics, EXPERT’ (Lat. experiri, to test), a person eminently skilled in any particular branch or profe ion; spec i tic ally, a scientific or profe ional witne who gives evidence on matters connected with his profe ion, as an analytical chemist or a person skilled in handwriting.