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.
The late modern dance period from 1946 to the present; Basic Movements of Modern Dance. Basic movements in modern dance are fluidly free style. The ballet step, arabesque, in modern dance is often performed with oblique angles of the body and in turns. Other ballet steps like chasse, pas de bourree and port de bra of the arms are similar ballet movements used in modern dance choreography.