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 Colors?
- How Can a Single Light Bulb Make You See the Whole Room?
- Do We All See The Same Colors?
- Do I See Colors the Same Way You Do?
- How Does Optics (Course intro) | Physics | Khan Academy Work?