Curious Kids: why doesn't the rainbow have black, brown and grey in it?

Rainbows are made when water droplets split light up into colours.

ELI5: Why does brown not appear in a rainbow (or on a color wheel

科學冷知識｜為何彩虹顏色不包括黑棕灰？七色彩虹其實不完全正確

Light – News, Research and Analysis – The Conversation – page 1

Light – News, Research and Analysis – The Conversation – page 1

🌈 Rainbow, Colours for Kids, color blocks

The Conversation

科學冷知識｜為何彩虹顏色不包括黑棕灰？七色彩虹其實不完全正確

Color Psychology in Art and Design

Why isn't there a pink, brown, gray, white, and black color on a

Moving Past Color-Blindness

Nottingham Trent University on The Conversation

i've always wondered why lego uses such oddly colored pieces for

Rainbows – News, Research and Analysis – The Conversation – page 1