eli5 Why Black objects tend to absorb light, while white reflects most of it?

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eli5 Why Black objects tend to absorb light, while white reflects most of it?

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because our brains process the absence of light as black and the presence of all wavelengths detectable by our eyes as white light

Humans’ eyes detect light. When they receive almost no light, they see a color which we chose to name “black”. When they receive all of the frequencies of the lighting evenly, they see a color which we chose to name “white”.

Thats literally the definition of color. You see/perceive the colors (wavelengths) of light that an object reflects back to your eyes. A black object is a pigment or material that absorbed most light and reflected almost nothing back to you. A white object reflected the majority of photons that hit it into your eyes. A green plant reflects green light and absorbs all the other colors of light.

Depending on if you mean why they appear that way or why things that look a certain way do those things have different answers.

Black appears black due to a lack of light bouncing off of the object and into our eyes.

Black objects absorb light due to the characteristics of the atoms that make up the molecules of the material. Some elements have a tendency to accept energy from light at wavelengths that overlap with our vision, and some molecules with those atoms make that even more effective.

The world’s darkest substances, like column arranged carbon nanotubes, are darker than other black surfaces because they better eliminate the ability for light to bounce off them and into your eyes.

No no they are black because they absorb most light and white because they reflect most. Different materials react differently to electronic waves.