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Why is glass transparent?

Key Facts In This Video

  1. How the atoms are arranged dictate how the electrons are arranged, and its how the energy levels of those electrons that determines whether light can get through. 01:25

  2. When a photon moves through an object and is able to move an electron to a higher energy state, the photon is absorbed. 01:52

  3. The energy difference between the ground state and a higher energy level is called the energy gap. 03:00

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