What are the disadvantages of a desk lamp?
In many places, especially the air conditioning market, summer building will use fluorescent lighting to save electricity. Small fluorescent lamps (energy-saving light bulbs) to start fluorescent lamp and electronic combination, using standard light bulb interface, to replace the ordinary incandescent bulbs.
By contrast, fluorescent lamps are much more efficient, approaching 40%, producing only 1/6 of the same brightness of incandescent lamps.
Most incandescent lights convert 90% of their energy into useless heat energy, and less than 10% of the energy will become light.
