Electronics
7 questions tagged Electronics — spanning every one of the seven Ws.
How do touchscreens work?
Most modern touchscreens sense the tiny electrical change your finger makes on a charged grid.
How Does a Capacitor Store Energy?
A capacitor stores electrical energy in an electric field created between two conductive plates separated by an insulator.
How Do OLED Screens Work?
OLED screens use tiny organic compounds that glow when electricity passes through them, so each pixel makes its own light.
What is a transistor?
A transistor is a semiconductor device that can amplify or switch electrical signals.
When was the first transistor invented?
The transistor was invented in 1947 at Bell Labs. John Bardeen, Walter Brattain, and William Shockley were central to the breakthrough.
How do led screens make pictures?
LED screens create images by lighting tiny pixels made of red, green, and blue light sources. By varying brightness, they can display millions of colors.
What is capacitance?
Capacitance is the ability of a system to store electric charge per unit voltage. It is measured in farads.