Jackson Beck 1943, he took over as narrator of radio's "The Adventures of Superman"; it was Beck who intoned the familiar prologue "strange visitor from another planet..." He also had recurring roles, voicing an occasional tough guy and also portraying Beany Martin, the Daily Planet's teenage copy boy. On Superman episodes featuring Batman, he played Bruce Wayne's butler, Alfred Pennyworth. He also impersonated Joseph Stalin and other world leaders for "The March of Time" radio series, starred as "The Cisco Kid" on radio from 1942 to 1945 and sleuth Philo Vance in a syndicated series from 1948 to 1950, starred in the
Butler–Volmer equation the surface is equal to that in the bulk. There are two limiting cases of the Butler–Volmer equation: where formula_21 and formula_22 are constants (for a given reaction and temperature) and are called the Tafel equation constants. The theoretical values of the Tafel equation constants are different for the cathodic and anodic processes. However, the Tafel slope formula_22 can be defined as: where formula_25 is the faradaic current, expressed as formula_26, being formula_27 and formula_28 the cathodic and anodic partial currents, respectively. Butler–Volmer equation The Butler–Volmer equation (named after John Alfred Valentine Butler and Max Volmer), also known as Erdey-Grúz–Volmer