Refraction as seen by the Human Eye

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“If the coin were to be observed in an empty pan and then watched as the pan was filled with water, the image of the coin would be refracted to position N.” —Quackenbos 1859


G. P. Quackenbos A.M. A Natural Philosophy: Embracing the Most Recent Discoveries in the Various Branches of Physics, and Exhibiting the Application of Scientific Principles in Every-day Life (New York: D. Appleton and Company, 1859) 247


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