Up to twelve percent of children have diagnosed or undiagnosed auditory processing disorder, a condition that inhibits the brainâs ability to translate and process sounds.
Magnesium is sometimes used in flares and flashbulbs because it  burns with a bright white light.
In low-energy bulbs an electric discharge passes through argon gas containing mercury, which generates UV light. This in turn activates the coating on the inside surface of the bulb, which shines brightly. The coating includes five rare elements: cerium, europium, lanthanum, terbium and yttrium. They glow red, green and blue, which together we perceive as white light. What's inside? Lanthanum (La, element 57; emits green light)