![Light-emitting diodes, LED, lights.](http://static.sciencelearn.org.nz/images/images/000/002/583/full/BlueLEDLights_OPastukh123rf_18443633_watermarked.jpg?1674168411)
Light-emitting diodes, LED’s, are semiconductor devices that emit visible light when an electric current is passed through them.
Light-emitting diodes, LED’s, are semiconductor devices that emit visible light when an electric current is passed through them.