Well, thanks to quantum mechanics today we have all our communications, lasers, fiber optics... In medicine we have magnetic nuclear resonance that allows us to see a photo of the inside of the human body. And also the entire GPS system is based on having atomic clocks in orbit on satellites that send a signal with impressive precision, which is what allows us to know where we are on Earth. For their part, computers use what is called Solid State Physics, which consists of when there are many atoms what happens to the electrons is that they move in conduction layers, and that is also quantum mechanics.

Electrical Basic Theory: Ohms Law - Ley de Ohm Basic Electrical Quantities - Voltage, Current and Resistance Variables ( Cantidades) Electricas Basicas - Tension, Corriente y Resistencia. AC Voltage - Tension Alterna DC Voltage - Tension Continua (DIrecta )