1. A tube Incandescent or that we called, incandescent
- This type of light bulb we began to recognize the early years 1920 - 1940 or approximately more than 90 years ago, is a feature that most incandescent lamps, and to keep it from the heat, their very high 100 degrees to 400 degrees, but more energy efficient10 - 15 lm/W Home current we use, but in many other countries, has been canceled by the use of the lamp, because it is a very light
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