What does oxygen produce green and red light?

Oxygen helps make green and red light when it’s inside a special kind of glass called a fluorescent lamp.

Imagine you're playing with a toy that glows in the dark, like one of those glow-in-the-dark stickers. When you turn on the light, something inside the toy starts to shine. That's what happens with oxygen inside a fluorescent lamp.

Inside the lamp, there’s a special gas, and oxygen is part of that gas. When electricity goes through the lamp, it gives energy to tiny particles called phosphor. These phosphor particles then glow, some give off green light, others give off red light.

It's like when you shake up a bottle of fizzy drink and it starts to bubble and sparkle, only with light instead of bubbles!

If you look closely at the lamp, sometimes you can see both green and red lights mixing together. That’s how we get white or other colors on our walls and screens!