Introduction:
The use of lights has been a fundamental aspect of human civilization, providing illumination during the night and enabling activities to continue after daylight fades. The history of human use of light sources can be traced back thousands of years, with various technologies and advancements contributing to the evolution of lighting. In this article, we will delve into the timeline of when people started using lights, exploring the different methods and innovations that have shaped the way we illuminate our surroundings.

Early History of Lighting:
The earliest forms of artificial lighting can be traced back to prehistoric times when humans used fire as a source of light. The discovery of fire allowed early humans to extend their productive hours beyond sunset and provided warmth and protection from predators. Over time, primitive oil lamps and candles were developed, further enhancing the ability to control and utilize light. Ancient civilizations such as the Greeks and Romans used oil lamps made from clay or metal, showcasing the early ingenuity in creating sustainable light sources.

Advancements in Lighting Technology:
The invention of the incandescent light bulb by Thomas Edison in the late 19th century revolutionized the way we illuminate our homes and cities. The incandescent bulb provided a more efficient and long-lasting alternative to previous light sources, leading to widespread adoption and the eventual electrification of urban areas. Throughout the 20th and 21st centuries, advancements in lighting technology have continued to transform the way we light our world, with the development of fluorescent, LED, and smart lighting systems offering energy-efficient and customizable solutions for various applications.

Impact of Lighting on Society:
The availability of artificial lighting has had a profound impact on human society, enabling cities to thrive during the night and revolutionizing industries such as entertainment, transportation, and healthcare. The introduction of street lighting improved public safety and facilitated economic growth, while the use of lighting in advertising and entertainment created new opportunities for artistic expression. Additionally, the widespread availability of electric lighting has significantly improved the quality of life for people around the world, allowing for extended work hours, increased productivity, and enhanced living standards.

Future of Lighting:
As we look towards the future, the evolution of lighting technology continues to advance at a rapid pace, with innovations such as smart lighting, solar-powered LEDs, and bioluminescent sources offering sustainable and efficient alternatives to traditional lighting methods. The integration of lighting with smart home systems and Internet of Things (IoT) devices is reshaping the way we interact with our environments, providing personalized and connected lighting experiences. With a focus on energy efficiency and environmental sustainability, the future of lighting promises to bring new possibilities and benefits to society.

Conclusion:
In conclusion, the use of lights has been a constant thread throughout human history, evolving from simple fire sources to sophisticated and energy-efficient lighting solutions. The timeline of when people started using lights showcases the ingenuity and creativity of humankind in harnessing light to illuminate our world. As we continue to innovate and explore new technologies, the future of lighting holds exciting prospects for enhancing our lives and shaping the way we interact with our surroundings. From ancient oil lamps to smart LEDs, the journey of lighting is a testament to human progress and innovation.