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.
Guide to 6 different styles of Irish dancing. Most people are only aware of one style of Irish dance- Irish step dancing, brought to world fame by the Riverdance production. There are many other styles, with the biggest difference being whether the dance style is either: 1  Flat DOWN - flatter, gliding style with more use of the heels & weight sinks down into the floor. 2  Ballet UP- ballet style with pointed toes and high on the balls of the feet & weight is lifted up from the floor.