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
Sex and the Single Girl Single Girl" (1970). Introduction (New 2003) In the 2003 edition, Brown includes a reintroduction to her book and briefly outlines the static situations and changes that the single woman has faced from the 1960s to 2003. The reviews that followed the publication of "Sex and the Single Girl", "were either highly favourable...or highly negative" and often attacked Brown's writing style and credibility. While several of Brown's concepts were "in common with the second-wave feminist arguments she precedes," other second-wavers such as Betty Friedan "found Brown's message 'obscene and horrible.'" When questioned regarding the criticism the book has received, Brown replied