Single-phase generator The early generators for those single-phase traction networks are single-phase generators. Even with newer three-phase motors which were introduced to some modern trains, the single-phases transmission for traction networks survive their time and are still in use in many railways today. However, many traction power stations have replaced their generators over time to use three-phase generators and convert into single-phase for transmission. In the early development of hydroelectricity, single-phase generators played an important role in demonstrating the benefits of alternating current. In 1891, a 3,000 volts and 133 Hz single-phase generator of 100 horsepower was installed at Ames Hydroelectric Generating
Argenteuil Basin with a Single Sailboat the National Gallery of Ireland in 1924. It is valued at €10m. At around 11am on 29 June 2012 a visitor to the gallery, Andrew Shannon, punched the painting causing "huge damage, shocking damage" with "an extensive three-branched tear". After 18 months of restoration work, on 1 July 2014, the painting was re-hung in the gallery, behind protective glass. The restoration saw 7% of the damaged area being lost, in a process that involved sewing microscopic threads back together. Shannon was jailed for 5 years for the attack. Argenteuil Basin with a Single Sailboat Argenteuil Basin with a Single Sailboat