It is known as an earthenware metal halide light since it is made out of a ceramic cylinder which has various metals in it, for example, mercury, argon and metal halide salts. The temperature of this fired cylinder can reach or try and surpass 1200 kelvins which makes kitchen cabinets the metal halide salts in it halfway disintegrated. These metal salts are then separated into metallic iotas which turns into the primary wellspring of light of the bulb.