Curious Kids is a series for children of all ages. If you have a question you'd like an expert to answer, send it to ...

The colors of rubies and emeralds are so striking that they define shades of red and green—ruby red and emerald green. But ...

To understand where black falls on the color spectrum, first consider what light actually is. Light is radiation visible to the human eye Light is energy called electromagnetic radiation.

The same effect occurs with light beyond the visible part of the red color spectrum, in the frequency range of 700 to 750 nm. We call that color "far-red." "Plants that grow in the shadow of other ...

A rainbow contains all the colours of the visible spectrum. It is often possible to see a secondary bow, which is slightly larger and fainter than the first – and the colours are in the opposite ...

Each colour within the visible light spectrum has its own narrow band of wavelength and frequency. An object appears to be black if it absorbs all the wavelengths of visible light. For example ...

Since the human eye cannot actually detect ultraviolet light, what we are actually looking at is a false-color image meant to ...