The GPS system is a true marvel of our science. Imagine that you can see in a handheld device such as a smartphone or in-dash LED display the exact place where you are no matter the spot on the whole planet. See in this tutorial how this marvel works.
Do you love science fiction? Do you know who were the first scientists and engineers who laid the foundations for modern rocketry that has made possible all the satellites and travels to the Moon and other planets? And what do you know about the early movies that depicted the first spaceflights?
In order to understand how silicon solar cells can generate electricity, we must go to the fundamentals of how electrons revolve around their nucleus, and how extremely important is to understand what happens when electrons jump from one orbit to another.