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Xenon creates a blue or lavender glow when subjected to an electrical discharge. Lamps that use xenon illuminate greater than standard lights. For instance, stroboscopic lamps, photographic flash lamps, higher-intensive arc-lamps for motion image projection, some lamps used for deep-sea observation, bactericidal lamps, sunbed lamps and higher-stress arc all use this gas. If you see headlights that give off a soft blue glow, they are most likely made with xenon. Xenon was discovered by Scottish chemist William Ramsay and English chemist Morris Travers in July 1898 at the University College London. The pair already extracted argon, neon and krypton from...