The sun's photosphere is very bright and can be seen from Earth.

How do I adjust the light level in this room?

He adjusted the light levels of the lamp to change the atmosphere of the room.

Visible light is the range of light visible to the human eye.

This lens is used for light concentration.

This lens is used to concentrate light.

He was hit hard in the solar plexus during the boxing match.

The heliocentric theory is the idea that the sun, not the earth, is the center of the universe.

He likes to take a walk in the park at dusk.

His hair is long and black.