Why does sodium lamp give out red light in the beginning
Answers
Answer:
When the lamp is first turned on the sodium is not properly vaporised yet. Instead it is effectively a low light neon/argon light with some red from the neon, and some violet from the Argon. The combination of these two colours creates , pink light. This is where the pink colour comes from.
After a short while the sodium metal is warmed by the activity of the Neon/Argon light, and the sodium metal vaporizes, the colour becomes the more normal bright orange/yellow we are used to.
Answer:
Explanation:
They create a monochromatic yellow light. In the diagrams below you will see how as it starts it creates a red glow due to the neon gas. The neon gas lights at a lower temperature. As the temperature increases the sodium begins to vaporize and the lamp turns to a pure yellow.