Heinrich Hertz was a German physicist born on February 22, 1857, known for his groundbreaking work in electromagnetism. He was the first to conclusively prove the existence of electromagnetic waves, which are essential for technologies like radio and television. His experiments in the late 1880s demonstrated that these waves could be transmitted and received, laying the foundation for modern wireless communication. Hertz's work led to the development of the Hertzian wave, a term used to describe electromagnetic waves. He also contributed to the understanding of radio waves and their properties. Sadly, Hertz passed away at a young age on January 1, 1894, but his discoveries continue to influence science and technology today.