Engineeringness on MSN

LEDs Explained: Light Emission in Semiconductor Devices

This video explains how LEDs (Light Emitting Diodes) function and why they are widely used in modern electronics. LEDs produce light by emitting energy when electrons recombine with holes in a ...

Home experiment demonstrates how light can carry sound, no wires required

In his home laboratory, Phil – a high school chemistry teacher who also runs a YouTube science channel – discovered that a simple solar panel can ...