Light

Light

Light is that range of electromagnetic energy that is visible to the human eye, the visible colors. The optical radiation includes not only the visible range, but a broader range of invisible electromagnetic radiation that could be influenced in its radiation behavior in a similar way as the visible radiation, but needs often other transmitters or receivers for this radiation. Dependent on the kind of experimental question light - optical radiation behaves as a wave or a particle named lightwave or photon. The birth or death of photons needs electrons - electromagnetic charges, that change their energy.


The speed of light is fastest in the vacuum.

In a wave we have to distinguish between the speed of transport of energy or the speed of the ...........................

...........................

 

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...........................

  •  is the image height.
  •  is the object height.
  •  is the distance from the image to the mirror or lens (also often )
    • For a mirror, it is positive if the image appears in front of the mirror. It is negative if the image appears behind.
    • For a lens, it is positive if the image appears on the opposite side of the lens as the light source. It is negative if the image appears on the same side of the lens as the light source.
  • { is the distance from the object to the mirror or lens (also often )

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