Incandescent lights are filled with argon, to preserve the filaments at high temperature from oxidation.
It is used for the specific way it ionizes and emits light, such as in plasma globes and calorimetry in experimental particle physics.
Gas-discharge lamps filled with pure argon provide lilac/violet light; with argon and some mercury, blue light.
Argon is also used for blue and green argon-ion lasers.
Incandescent lights are filled with argon, to preserve the filaments at high temperature from oxidation. It is used for the specific way it ionizes and emits light, such as in plasma globes and calorimetry in experimental particle physics. Gas-discharge lamps filled with pure argon provide lilac/violet light; with argon and some mercury, blue light. Argon is also used for blue and green argon-ion lasers.
Argon