Why do atoms emit visible light when they’re excited? And why only light of certain wavelengths?

Описание к видео Why do atoms emit visible light when they’re excited? And why only light of certain wavelengths?

Prof Al from the Chemistry department at AUT addresses these questions and does some calculations.

The worked problem: What is the wavelength of the photon emitted when a hydrogen atom in the n = 4 state undergoes an electronic transition to the n = 2 state?

Watch the other episodes of this series:    • Chemistry Matters  

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