What device is known for being perfected by Thomas Edison?

The light bulb is renowned for being perfected by Thomas Edison, who made significant advancements in its design and practicality. While earlier versions of the light bulb existed, Edison's innovation came in the form of a reliable incandescent bulb that could be mass-produced and used in homes and businesses. His improvements included a better filament made of carbonized materials and an effective vacuum inside the bulb to increase its lifespan and efficiency.

This innovation was instrumental in revolutionizing indoor lighting and significantly impacted daily life, enabling longer working hours and enhancing the quality of life. Edison's work with the light bulb was part of a larger effort to develop electric power systems, which also included the establishment of the first electric utility in New York City. His contributions laid the groundwork for the widespread adoption of electric light, effectively transforming society during the Industrial Revolution and beyond.