In Pennsylvania, only employers of seasonal farmworkers are required to provide breaks. These employers must give employees a 30-minute break after five hours of work, during which employees must be relieved of all duties. This time may be unpaid. All other Pennsylvania employers have no obligation to provide either meal or rest breaks.
Overview. 1  A cold cathode fluorescent lamp (CCFL) is a lighting system that uses two phenomena: electron discharge and fluorescence. CCFLs are mainly used as light sources for backlights, because they are smaller and have longer lifetimes than ordinary fluorescent lamps.
See how it works in the video. Other Neon Lamps: People use the term 'neon sign' to describe CCFLs of all colors. Other colors may not use neon. They may use helium, xenon, or other nobel gases. Today most other colors work by using mercury vapor. This type of lamp was invented 3 years after the neon lamp (1901).