The LEDs are now used in giant outdoor displays and traffic signals and could eventually replace ordinary light bulbs, and blue lasers will be at the heart of next - generation DVD players. (science.sciencemag.org)
All of that violence cited in question 5 leaves a visible trail of radiation, especially in the form of gamma rays — the extremely energetic cousins of ordinary light. (discovermagazine.com)
They look so much better in sunlight than in ordinary light. (outfittrends.com)