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.
Jazz dance is shared by a large range of dance styles. Before the 1950s, jazz dance relating to dance styles that originated from African American vernacular dance.Jazz dance was an integral part of jazz until the end of the swing era in the late 1940s. In the 1950s, a new genre of jazz dance â modern jazz dance â emerged, with roots in Caribbean traditional dance.Every individual style of jazz dance has roots traceable to one of these two distinct origins.azz dance was an integral part of jazz until the end of the swing era in the late 1940s. In the 1950s, a new genre of jazz dance â modern jazz dance â emerged, with roots in Caribbean traditional dance.