Ar=ARGON
Pure argon gas is transparent. The liquid and solid forms are also colorless. Yet, excited argon ions glow brightly. Argon is used to make lasers, which may be tuned to green, blue, or other colors.
Pure argon gas is transparent. The liquid and solid forms are also colorless. Yet, excited argon ions glow brightly. Argon is used to make lasers, which may be tuned to green, blue, or other colors.