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Through constant research, many technological advancement has been experienced in various fields. One of the notable technological advancement is in lighting system, which has seen LED bulb replacing the notorious halogen or incandescent lighting system. LED bulb is efficient, saves energy by consuming little power and is durable ( 50, 000 hrs). In addition, it is environmental friendly and is free from harmful substances such as mercury which is found in halogen bulbs. Halogen bulbs waste too much energy as it consumes a lot of power and has lower efficiency compared to LED bulb. Its life span is also shorter than LED bulb.
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