LED lights, or light-emitting diodes, are highly efficient lights with nearly endless uses in modern society. Its first applications were mostly in laboratories experimenting with radium, crystals, and luminescence. Though LED light technology was officially created in 1927, it wasn’t for several more decades that its innovative properties were put to practical use. From humble beginnings, LED lights have evolved into an affordable, reliable light source that can be found everywhere from the lights in your refrigerator to the bulb of your mini flashlight.