Magnesium burns with a brilliant white light and is used in pyrotechnics, flares and photographic flashbulbs; Magnesium is the lightest metal that can be used to build things, although its use as a structural material is limited since it burns at relatively low temperatures. Magnesium is frequently alloyed with aluminum, which makes aluminum easier to roll, extrude and weld. Magnesium-aluminum alloys are used where strong, lightweight materials are required, such as in airplanes, missiles and rockets. Cameras, PC, Cellphone, Vehicles, horseshoes, baseball catchers' masks and so on.