Lighting up the World with Gaseous Discharge

Why does light appear when electricity passes through a gas element in a discharge tube?

What causes this phenomenon?

Answer:

Electricity excites the atoms of a gas element in a discharge tube, causing their electrons to jump to a higher energy level. When the excited electrons return to their original energy level, light is emitted. The color of the light depends on the type of gas.

When electricity passes through a gas element in a discharge tube, a phenomenon known as gaseous discharge occurs, resulting in the emission of light. The electricity excites the atoms of the gas, causing electrons in these atoms to jump to a higher energy level. When these excited electrons return to their original or lower energy level, they give off light. This release of energy manifests as visible light whose color is determined by the specific gas in the tube.

It's truly amazing how the simple flow of electricity can bring about such a vibrant and colorful display of light in the form of gaseous discharge. The world of science continues to fascinate us with its wonders!