Magnified Face in a Concave Mirror

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“When the concave mirror is large, say six inches in diameter, and eight or ten inches focal distance, it exhibits the human face of enormous bulk, the spectator being frightened at the size and courseness of his own features.” -Comstock 1850


J. L. Comstock A System of Natural Philosophy: Principles of Mechanics (: Pratt, Woodford, and Company, 1850) 230


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