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.
10 most extreme places on Earth. Ballroom dancing is formal, social dancing. The word ball is from the Latin word ballare, which means dance. This type of dancing is done by a couple; one person leads and the other follows the steps. The two main styles are international style and American style. The rumba, mambo, cha cha, waltz, foxtrot and swing dances are some of the most popular types of ballroom dancing enjoyed worldwide. The rumba style is also known as the Latin waltz.