Artificial sunlight is something that people make to give off light that is like the sun. The sun is a big ball of fire in the sky that helps us see and gives us warmth. People use artificial sunlight inside buildings or in places where it is hard to get sunlight from the real sun.
To make artificial sunlight, people use special lights that give off a lot of different colors. These colors are called wavelengths. The lights give off colors that are like the colors in sunlight. When all of these colors come together, they make something that looks like sunlight.
Artificial sunlight can be used for lots of things. It can help plants grow, it can help people who need more Vitamin D, and it can even help people feel better if they are sad. It is a really clever way to bring sunshine indoors when we need it!