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.
Common Dance Moves. Although jazz dance can be performed its traditional form, it is often influenced by other dance styles such as acro, ballet, contemporary, lyrical, and hip hop. In turn, many other dance styles are influenced by jazz dance.ntil the mid 1950s, the term jazz dance often referred to tap dance, because tap dancing (set to jazz music) was the main performance dance of the era. During the later jazz age, popular forms of jazz dance were the Cakewalk, Black Bottom, Charleston, Jitterbug, Boogie Woogie, Swing dancing and the related Lindy Hop.