Spontaneous emission

The transcript explains the process of spontaneous emission, where a photon of light is produced when an atom transitions from an excited state to a lower energy level. It highlights examples of spontaneous emission, such as light from fluorescent tubes, cathode ray tube televisions and monitors, and the Aurora borealis.

What occurs when an atom transitions from an excited state to a lower energy level?

How does spontaneous emission differ from stimulated emission?

What is the phenomenon that causes light to be emitted from fluorescent tubes?

Can you explain the role of spontaneous emission in the Aurora borealis?

What are some common sources of light that result from spontaneous emission?