Batman (comic book) into Batman's pantheon, most notably those of Catwoman and Batman's eventual nemesis, the Joker. Alfred Pennyworth, the Wayne family butler, was introduced in issue #16 (April–May 1943). Editor Whitney Ellsworth assigned a "Batman" story to artist Dick Sprang in 1941. Anticipating that Bob Kane would be drafted to serve in World War II, DC inventoried Sprang's work to safeguard against delays. Sprang's first published Batman work was the Batman and Robin figures on the cover of "Batman" #18 (Aug.-Sept. 1943), reproduced from the art for page 13 of the later-published "Detective Comics" #84 (Feb. 1944). Sprang's first original published Batman
Butler–Volmer equation Butler–Volmer equation The Butler–Volmer equation (named after John Alfred Valentine Butler and Max Volmer), also known as Erdey-Grúz–Volmer equation, is one of the most fundamental relationships in electrochemical kinetics. It describes how the electrical current on an electrode depends on the electrode potential, considering that both a cathodic and an anodic reaction occur on the same electrode: or in a more compact form: where: The right hand figure shows plots valid for formula_15. The previous form of Butler–Volmer equation is valid when the electrode reaction is controlled by electrical charge transfer at the electrode (and not by the mass transfer