Is magnesium used in flares and light bulbs?

Yes, magnesium is used in flares due to its ability to burn brightly and produce intense light when ignited, making it ideal for signaling and illumination. In light bulbs, particularly in some types of incandescent bulbs, magnesium compounds can be used in the filament or as a part of the glass to enhance the bulb's performance. However, magnesium is not commonly used in modern light bulb technologies like LEDs.