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.
Since monitors have to be lit in order for the viewer to see anything, the difference between the two types is in what is used to light up the crystals within the display. For LCD, thatâs cold cathode fluorescent lamps (CCFLâs) and in LEDs, itâs tiny light emitting and low-energy consuming diodes.