Question

Why doesn't a neon sign finally run out of excited atoms and produce dimmer and dimmer light?
Because electrons are returning to their ground state in neon atoms (they stay excited for a VERY short time) so there are plenty of neon atoms in the ground state to be re-excited.

Related Questions

What will happen in the diagram if a lightbulb is placed at D and B is closed? Responses The lig... A neon sign is made of glass tubing whose inside diameter is 2.5 cm and whose length is 5.5 m .If... Does light from a neon sign have a continuous spectrum? Explain. Yes. Excited neon atoms emit photo... Research conducted on what happens when atoms get excited has helped in the identification of the at...