• Electrical India
  • Jun 5, 2017

Task oriented lighting systems are used when some task requires substantially more light than others do. A Higher level of task illumination may be provided by asymmetrical luminaire layouts that concentrate luminaires at the task. Special purpose Luminaires are used for task-oriented illumination. They are also used to provide a higher level of luminance for difficult visual tasks...

  • Electrical India
  • Apr 5, 2015

In general concept, a light bulb, or electric light or electric lamp is a device that produces light from electricity. In addition to lighting a dark space, they can be used to show an electronic device is on, to direct traffic, for heat, and many other purposes. Improved vacuum pumps and better materials made them shine longer and brighter late in the century.