Turbine waterwheels. Gas, steam, and water turbines have a casing around the blades that contains and controls the working fluid. Credit for invention of the steam turbine is given both to Anglo-Irish engineer Sir Charles Parsons (1854–1931) for invention of the reaction turbine, and to Swedish engineer Gustaf de Laval (1845–1913) for invention of the impulse turbine. Modern steam turbines frequently employ both reaction and impulse in the same unit, typically varying the degree of reaction and impulse from the blade root to its periphery. The word "turbine" was coined in 1822 by the French mining engineer Claude Burdin from the
RMS Connaught (1897) RMS Connaught (1897) RMS "Connaught" was a steamship built in 1897 and operated by the City of Dublin Steam Packet Company for Royal Mail as well as passenger service. "Connaught" was the second ship of this name operated by the line. She was torpedoed and sunk by German submarine on 3 March 1917. In 1859, the City of Dublin Steam Packet Company ordered four steamers for Royal Mail service, named for four provinces of Ireland, RMS "Connaught", , and ; these four were commonly referred to as "The Provinces". In 1897, the line was awarded an additional 21 years for