CFLs have the environmental disadvantage that they contain mercury, requiring special handling in disposal to avoid contamination of our environment. An emerging alternative lamp will use light emitting diodes, for even greater efficiency than the CFLs, but at a much higher cost - at least so far...
The invention of the incandescent (白炽的) light bulb by Thomas Edison in 1879 created a demand for a cheap,readily available (可利用的) fuel with which to generate large amounts of electric power.Coal seemed to fit the bill,and it fueled (供以燃料) the earliest power stations...
If no light source was available, then other attractants such as honey or decaying fruit were employed. As for trapping or containing the insect, many unique ideas have been used, two of which included a catch cylinder rotating against a brush that swept insects downward into a disposal bag ...
in enclosed fixtures, upside down, in downlight or recessed cans because of overheating, outside in cold weather. Worse yet, they can start house fires if put into a circuit with a dimmer. ALso, if you use them light a regular light bulb, turning them on and off, it shortens the li...
A STUDY ON ENHANCE ECO FRIENDLY LED LIGHT BULBS FOR THE INCANDESCENT LIGHT BULB SHAPED LED light bulbs shaped the incandescent light bulbs,despite of reuse potential of each part,must be discarded when they are out of order. Due to these causes considerable disposal costs and environmental causes...
An incandescent bulb is a type of light bulb that can work with both alternating and direct current. Although incandescent bulbs...
CFLs have the environmental disadvantage that they contain mercury, requiring special handling in disposal to avoid contamination of our environment. An emerging alternative lamp will use light emitting diodes, for even greater efficiency than the CFLs, but at a much higher cost - at least so far...
A STUDY ON ENHANCE ECO FRIENDLY LED LIGHT BULBS FOR THE INCANDESCENT LIGHT BULB SHAPED LED light bulbs shaped the incandescent light bulbs,despite of reuse potential of each part,must be discarded when they are out of order. Due to these causes considerable disposal costs and environmental causes...