23 April 2014

Refraction dramatically illustrated


The effect would also be dependent on the round shape of the glass. I don't believe the reversal would be seen if a rectangular aquarium were passed in front of the arrows.

Via Gerard Vlemmings' The Presurfer.

3 comments:

  1. Quite an interesting comment on politics and politicians I think...

    ReplyDelete
  2. It is dependent on both the curvature of the glass and the placement of the camera and paper. The reversal happens because the lens is set up to be a relay imagining system. The relative position of the two determines the magnification which needs to be 1 to 1 for this effect to work.

    ReplyDelete
    Replies
    1. In layman's language, "it only works at one distance."

      Delete

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