Named after Heinrich Hertz and abbreviated as Hz or illustrated as the f symbol, hertz equals one (0.00000000125) cycle per second, measuring the waves or frequencies of electric changes each second. Hertz is commonly used to measure a computer monitor's refresh rate and in computer processors.
Modern dance. The form of dance style known as modern dance is an artistic dance form that allows free movement based on choreography that seeks to provide the audience with a subject and theme. Modern dance performers created this free form style to allow older dancers to continue to dance long after their ballet dance careers ended.
This style of tap led to what is today known as Broadway style, which is popular in American culture. It often involves high heeled tap shoes and show music, and is usually the type of tap first taught to beginners.hat is now called jazz dance evolved out of tap dance, so both dances have many moves in common. But jazz evolved separately from tap dance to become a new form in its own right. Well-known dancers during the 1960s and 1970s included Arthur Duncan and Tommy Tune.