No, grey is not in the rainbow.
Why Grey Isn't Part of the Rainbow
The colors in a rainbow are a result of light refraction, where white light is separated into its constituent colors. These colors are known as the visible spectrum. According to a reference, when light is refracted by raindrops it separates white light out into the visible spectrum, meaning it is no longer white. Grey, on the other hand, is created by mixing black and white.
- Rainbow Colors: Rainbows show the visible spectrum, which includes colors like red, orange, yellow, green, blue, indigo, and violet.
- Grey's Composition: Grey is created by mixing black and white.
- Rainbows and Black/White: Since black and white are not part of the visible spectrum of a rainbow, colours created by mixing them are also absent.
Absence of Black and White
Because rainbows are formed from the refraction of white light into its visible spectrum, there is no black or white present in a rainbow. Consequently, any colour that is a mix of white and black, such as grey, will also not be present in a rainbow.
Summary in Table Format
| Color | Present in Rainbow? | Composition |
|---|---|---|
| Red | Yes | Part of visible spectrum |
| Orange | Yes | Part of visible spectrum |
| Yellow | Yes | Part of visible spectrum |
| Green | Yes | Part of visible spectrum |
| Blue | Yes | Part of visible spectrum |
| Indigo | Yes | Part of visible spectrum |
| Violet | Yes | Part of visible spectrum |
| Grey | No | Mix of black and white |
| Black | No | Not part of visible spectrum |
| White | No | Not part of visible spectrum |
Therefore, grey is definitively not a color found within a rainbow.
