Tag: christmas lights

The Chemistry of LED lights and How LED lights work

A Basic Guide to How LED Lights Work

Light-emitting diodes (LEDs) give off light when current is passed through them. They are made from semiconducting materials, with the colour of light depending on the materials used. They are usually gallium-based compounds.
Click to enlarge

Christmas isn’t far off now, and whether you’re celebrating it or not, you may well have started seeing Christmas lights starting to appear¬†adorning houses and Christmas trees. How do these lights actually work, and how can they be made to produce such an array of colours? This graphic takes a look at the chemistry.

Read more