* Absorption: The material strongly absorbs the light energy. The electrons within the material are excited to higher energy levels, and the energy of the light is transferred to the material.
* Increased Amplitude: The oscillations of the electrons within the material become larger due to the energy absorbed from the light. This is because the light's frequency matches the natural frequency of the material's electrons, causing them to resonate.
* Heat Generation: The absorbed energy is often converted into heat within the material.
* Transparency or Opaque: Whether the material appears transparent or opaque depends on other factors, such as the density of the material. If the material is dense, the light may be absorbed and not transmitted.
Examples:
* Metals: Many metals have electrons that can resonate with visible light, leading to the shiny, reflective appearance of metals.
* Glass: Glass absorbs strongly in the ultraviolet region, where its natural frequency matches that of UV light. This is why UV light doesn't pass through glass, protecting us from its harmful effects.
Key Takeaway: When the frequency of light matches the natural frequency of a material, it leads to resonance, causing strong absorption and potential heat generation.
