Introduction
The invention of the electric light bulb revolutionized the way we illuminate our surroundings. It brought about major improvements in various aspects of our lives, from increasing productivity in industries to enhancing safety and comfort in households. Understanding the purpose of the electric light bulb is crucial in appreciating its significance in modern society.

Historical Context
In the late 19th century, Thomas Edison is credited with inventing the first commercially practical incandescent light bulb. This invention marked a significant milestone in human history, as it provided a reliable and efficient source of artificial light. Prior to the electric light bulb, people relied on candles, oil lamps, and gas lamps for illumination, which were not only dim but also posed fire hazards. The electric light bulb revolutionized lighting by offering a safer, brighter, and more reliable alternative.

Practical Applications
The primary purpose of the electric light bulb is to provide illumination in various settings. From lighting up homes and streets to illuminating workplaces and public spaces, electric light bulbs play a crucial role in our daily lives. They enhance visibility, improve safety, and create a more conducive environment for activities such as reading, working, and socializing. In addition, electric light bulbs have paved the way for advancements in technology, leading to the development of energy-efficient lighting solutions such as LEDs.

Environmental Impact
While electric light bulbs have undoubtedly improved our quality of life, they also come with environmental consequences. Traditional incandescent light bulbs consume a significant amount of energy and contribute to carbon emissions. In recent years, there has been a global shift towards more sustainable lighting options, such as LED bulbs, which are energy-efficient and have a longer lifespan. By understanding the environmental impact of electric light bulbs, we can make informed choices to reduce our carbon footprint.

Conclusion
In conclusion, the purpose of the electric light bulb goes beyond mere illumination. It has transformed the way we live, work, and interact with our surroundings. By embracing energy-efficient lighting solutions and raising awareness about the environmental impact of traditional light bulbs, we can continue to enjoy the benefits of artificial light while minimizing our ecological footprint. The electric light bulb serves as a symbol of human ingenuity and innovation, reminding us of the power of technology to shape a brighter future.