Abstract: A quartz light includes a lamp base having two grooves, and a light capsule located above the lamp base and having a projection disposed in a compartment of the light capsule, a metal electrode engaged in the compartment of the light capsule and engaged over the projection for forming two downwardly dependent limbs, two molybdenum foils engaged in the compartment of the light capsule and electrically connected to the limbs of the metal electrode, and two lead wires electrically coupled to the molybdenum foils and each having an external end portion extended out of the light capsule and engaged through the grooves of the lamp base and extended out of the lamp base, and secured to the lamp base by heat sealing the lamp base onto the lead wires.