The light fantastic

The growing significance of light emitting diodes (LED), which are being used for lighting torches, bicycle lamps, car stoplights, and traffic lights, are discussed. Some of the advantages of LEDs include their better optical efficiency and they emit light in one direction. Another advantage of the LEDs is that they help in selecting the color of light when required. They also possess a long service life as their brightness reduces over a period of time. LEDs are being preferred over other sources of light in applications where long service life and high efficiencies are required. They are also environmentally friendly, operate from low voltage, and require less maintenance. Intensity and tone of light can be configured using LEDs and modulated manually or by computer. Architects, designers, and advertisers can them to set moods and to change them with a cycle adapted to the presence of sunlight.