Imagine your eyes are like little cameras that take photos. During the day, they use color pictures, but at night, they switch to black and white because there's not much light around. This is why things look gray in the dark.
Examples
- A black cat in a dark room looks gray, but under a bright lamp, it becomes clearly black.
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See also
- How Do You Actually See Color?
- Why Do We See Colors When It's Actually Light?
- How Do You Actually See Colors?
- Why Do We See Different Colors?
- How Can a Single Light Bulb Make You See the Whole Room?