You may have heard of the light spectrum, which consists of seven colours: red, orange, yellow, green, blue, indigo and ...

Purple is a combination of wavelengths from opposite extremes of the spectrum, which technically deosn’t make any sense, but ...

The Pink Moon 2025, occurring on April 12, will be a micromoon visible in India on April 13. Named after blooming moss pink ...

Yet green remains the color associated with St. Patrick’s Day and Ireland throughout the world, largely due to the Catholic diaspora and its association with nationalism. However, blue still ...

You can use a prism to split (or disperse) white light into a spectrum of colours: red, orange, yellow, green, blue, indigo and violet. Dispersed means that the colours are separated out.

Flight: longer, narrower wings and shorter tail than the tree swallow; the violet-green has a more fluttering flight style. The tree swallow is larger, entirely greenish blue above, and lacks ...