The second industrial revolution, which occurred roughly between the mid-19th and early 20th centuries, was marked by significant technological advancements. One of the most important inventions of this period was electricity and its applications, including the development of the electric light bulb by Thomas Edison. The widespread use of electricity revolutionized various industries, transformed daily life, and laid the foundation for modern infrastructure and communication systems. This invention had a profound impact on society, making it a key achievement of the second industrial revolution.