One example of a product that came from an unseen thing is electricity. In ancient times, people were unaware of the existence of electricity, but it had always been present in the natural world. It was not until the late 16th and early 17th centuries that scientists like William Gilbert began to study and understand the concept of electricity.
The development of electricity as a practical product emerged during the 19th century when inventors like Thomas Edison and Nikola Tesla made significant contributions to harnessing and utilizing electricity for various applications. Today, electricity is an indispensable part of modern life, powering our homes, industries, and technological devices. It's fascinating to think that something as essential as electricity, which we cannot see with the naked eye, has become such a fundamental part of our daily lives.