Call up a fleet of viruses that self - assemble into patterns that reflect only certain wavelengths of light. (newscientist.com)
You also need exposure to certain wavelengths of light in order for your metabolism to function optimally. (articles.mercola.com)
One of the prime explanations for this low reflectivity — an abundance of minerals including the element iron, which strongly absorb certain wavelengths of light falling upon them — doesn't fit in this instance, researchers say. (sciencemag.org)