BROVANA Â® (arformoterol tartrate) Inhalation Solution is a long-acting beta 2-adrenergic agonist (LABA) indicated for the long-term, twice-daily (morning and evening) maintenance treatment of bronchoconstriction in patients with chronic obstructive pulmonary disease (COPD), including chronic bronchitis and/or emphysema.
The oil drop experiment was performed by Robert A. Millikan and Harvey Fletcher in 1909 to measure the elementary electric charge (the charge of the electron). The experiment entailed observing tiny electrically charged droplets of oil located between two parallel metal surfaces, forming the plates of a capacitor.
Millikanâs Oil-Drop Experiment. A simplified view of the progress of scientific work is to describe it as a create-test-use procedure. Initially, an empirical or theoretical concept is created, then it must be tested, and if all tests are successful, then the concept can be accepted and used to further expand the base of knowledge.