Lasers are special lights that are very bright and can travel very far. They are used in many different things, like in stores to scan barcodes or in shows to make pretty colors.
Lasers start with electricity that goes into a special crystal. The crystal makes the electricity turn into a very strong light that can travel in a straight line. This strong light is what we call a laser.
Imagine a flashlight, but instead of a small lightbulb it has a crystal inside. The light that comes out of the crystal is very bright and can travel a long way. This is what a laser is!
Lasers can be used for many things, like in doctors’ offices to look inside your teeth, or in factories to cut metal. It is a very useful tool and scientists are always finding new ways to use it.