Computers, mobile phones, tablets and other hand-held electronic devices, nuclear power plants, GPS satellites all owe their existence to the revolution in Physics that took place between 1800 and 1900. Before then, classic physics was used to describe the world around us, but it was not able to explain some observations, like the photoelectric effect or the Michelson-Morley experiment. These experiments were the stepping stones to the technologies used nowadays. The Photoelectric effect is a foundation of solar panels, digital cameras, and remote controls. The Michelson-Morley research confirmed the theory of relativity, which in turn allowed for a precise positioning measurements such as the GPS. Without these experiments, none of those essential technologies would exist.