Efficiency comparison: Most electric lamps convert 90% of the energy consumed into useless thermal energy, while only less than 10% of the energy becomes light. In contrast, fluorescent lamps (also known as fluorescent tubes) have much higher efficiency, approaching 40%, and generate only one-sixth of the heat generated by incandescent lamps of the same brightness. Therefore, many places, especially shopping malls and buildings that require air conditioning in summer, use fluorescent lights for lighting to save electricity. A small fluorescent lamp (energy-saving bulb) combines the fluorescent lamp with the starting electronics, using a standard light bulb interface to replace ordinary incandescent bulbs. For example, a 26 watt energy-saving light bulb emits 11 watts of brightness and 15 watts of heat. Four times more power consumption than incandescent bulbs emitting the same brightness of 11 watts, up to 100 watts; Release six times more heat, up to 90 watts. Many household lights are still dominated by ordinary ones. Halogen bulbs have gradually become more popular, especially in situations where light sources need to be concentrated, such as home spotlights and car headlights, where halogen bulbs are often used. A good halogen bulb can achieve an efficiency of 15%. It replaces the ordinary glass of the electric lamp with more heat-resistant quartz glass (halogen lamps have a high temperature of around 2100 degrees Celsius), and fills the bulb with halogen element gases (iodine or bromine), making it a halogen lamp. Halogens and tungsten undergo a cycle of decomposition and synthesis within the bulb using temperature differences to extend the lifespan of the filament. But quartz glass cannot isolate ultraviolet light like ordinary glass. So, if you are exposed to its ultraviolet light for a long time, your skin will turn bronze. Energy saving tips: Choose energy-saving lamps: Fluorescent lamps save electricity compared to incandescent lamps. The brightness of a 20 watt fluorescent lamp is even better than that of a 40 watt incandescent lamp (a better environmentally friendly and energy-saving product, LED fluorescent lamps, can replace 40 watt incandescent lamps with 2 watts. A 4 watt LED fluorescent lamp can completely replace 20 watt ordinary fluorescent lamps and 20 watt ordinary energy-saving lamps) [7]. Make full use of reflection and reflection: Adding a suitable reflector to the lamp can improve illumination. By using the reflection of indoor walls and adding white walls, the illumination can also be improved by about 20%. Always keep the bulbs and lampshades clean to ensure the highest lighting and light reflection effect. The installation height should be appropriate. If a 20 watt fluorescent lamp is installed at a height of 1 meter, the illumination is 60 lux; A height of 0.8 meters is 93.75 lux. Lowering the height appropriately can reduce the wattage and save electricity. Only LED department merchants can achieve an illumination level of around 200 lux if installed at a height of 2 meters, and around 96200 lux if installed at a height of 3 meters. Therefore, using LED lighting products for energy-saving lighting is often useful