Invention refers to the creation of a new device, method, or process that has not previously existed. It plays a crucial role in advancing technology and improving our daily lives. Famous inventors like Thomas Edison and Nikola Tesla have contributed significantly to various fields through their groundbreaking inventions. The process of invention often involves problem-solving and creativity, leading to the development of products that can change the world. For instance, the invention of the telephone revolutionized communication, while the light bulb transformed how we illuminate our homes and cities.