a Swedish-American inventor, active in England and the United States, and regarded as one of the most influential mechanical engineers ever. Ericsson collaborated on the design of the steam locomotive Novelty, which competed in the Rainhill Trials on the Liverpool and Manchester Railway, won by George Stephenson's Rocket. In America he designed the US Navy's...

a Swedish-American inventor, active in England and the United States, and regarded as one of the most influential mechanical engineers ever. Ericsson collaborated on the design of the steam locomotive Novelty, which competed in the Rainhill Trials on the Liverpool and Manchester Railway, won by George Stephenson's Rocket. In America he designed the US Navy's first screw-propelled steam-frigate USS Princeton, in partnership with Captain Robert Stockton, who unjustly blamed him for a fatal accident. A new partnership with Cornelius H. DeLamater of the DeLamater Iron Works in New York resulted in the first armoured ship with a rotating turret, the USS Monitor, which dramatically saved the US naval blockading squadron from destruction by an ironclad Confederate vessel, CSS Virginia, at Hampton Roads in March 1862.

a German chemist known for contributing to the early development of the theory of structure, formulating the Erlenmeyer rule, and designing the Erlenmeyer flask, a type of chemical flask, which is named after him. His work mostly focused on theoretical chemistry, where he suggested the formula for naphthalene and formulated the Erlenmeyer rule: alcohols in w...

a German chemist known for contributing to the early development of the theory of structure, formulating the Erlenmeyer rule, and designing the Erlenmeyer flask, a type of chemical flask, which is named after him. His work mostly focused on theoretical chemistry, where he suggested the formula for naphthalene and formulated the Erlenmeyer rule: alcohols in which the hydroxyl group is attached directly to a double-bonded carbon atom become aldehydes or ketones.