system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What are wavelengths and how does it relate to color?

What exactly are wavelengths, and how do colors have wavelengths? What exactly is a color?
gpt
>What exactly are wavelength?

The distance between two crest of a wave. Imagine an ocean with waves. There are high points and low points. The wave moves forward, but the distance between the high points stays the same. This is the wavelength.

>how do colors have wavelength?

Color is just light, and light behaves like a wave. Sort of. As light moves through space it has high energy areas and low energy areas which can be measured just like the area of high water and low water with an ocean wave.

>What exactly is a color?

Color is just how our minds perceive different wavelength of light. The same way our hears perceive the difference between high frequency and low frequency sounds, our eyes perceive the difference large wavelength and low wavelength light. Our brain then interprets that as color.