Lighting Lighting is essential in human life, to a certain extent, it affects the quality of people's life, work and study. Before electricity was invented, people used to rely on the sun or other natural sources of illumination, such as oil lamps and candles. Every day people would have to work and study in the dark after the sun set. With the invention of electricity, people could use electric lights, such as incandescent bulbs, fluorescent tubes, halogen lamps, LED lamps, and so on. These lighting fixtures brighten up our lives and work without depending on the sun. We can also adjust the brightness of the lights according to our preferences, so that we can adapt to different places and occasions. The development of lighting technology has changed many aspects of our lives. Nowadays, energy-saving lighting technology is popular, because it is more efficient and environmentally friendly, such as LED lights. LED lights not only save energy, but also have a long life span, so they can save you a lot of money in the long run. In conclusion, although lighting has been used in our daily life for hundreds of years, science and technology have greatly improved the quality and efficiency of lighting. It has made our lives brighter and safer and contributed to the progress of human civilization.