All three types of cones can absorb numerous ... The problem with purple is that it isn’t supposed to be possible to create a color from wavelengths on opposite ends of the spectrum.

The human eye perceives color using three types of cones, but no natural light can stimulate just the the cones associated with medium-wavelength light in the visible spectrum. A new tool ...

The haze and smoke in the atmosphere Friday made for a very vibrant sunset and will likely lead to a vibrant sunrise Saturday ...

Rather than trying to mix and match different wavelengths of light to produce color, their Oz system stimulates ... to stimulate thousands of cone cells all at once. And the researchers are ...

Earlier studies found that many species of birds-of-paradise evolved another color quirk — ultrablack feathers that absorbed nearly all the wavelengths of light that strike them. The scientists ...