The White House shared an AI image of President Donald Trump in honor of Star Wars Day 2025 — and people quickly recognized the color of his lightsaber is red. ‘Star Wars’ creator George Lucas once ...

Traffic light colors play a major role, but why did red, yellow and green make the cut over others on the color wheel? Ahead, we’ll explore traffic light history and the meaning of stoplight ...

"It is not a new color," John Barbur, a professor of optics and visual science at City St George's, University of London, ...

Researchers discover a new color outside the range of human color vision, but you have to laser your retinas to see it ...

Narrow-band ultraviolet B (NB-UVB) light therapy at 311 nm is a common treatment for vitiligo. Doctors prefer it over PUVA because it is safer and more effective. Red light therapy also helps by ...

Imagine pulling up to a busy intersection and, instead of the usual trio of red, yellow, and green lights, you spot something ...

The rapid shift from light to dark causes a drastic shift in the way our eyes view colors, something that typically happens gradually. The Purkinje effect will abruptly cause red shades to look ...

Melting polar ice narrows the light spectrum underwater, favoring blue-tuned algae and disrupting the ocean food web.

Low-level red-light therapy “may exceed tissue tolerance ... thereby lacking comprehensive functional evaluations such as color vision assessment and microperimetry. Potential confounding ...