Elementary treatise on physics experimental and applied for the use of colleges and schools (1890)
Ganot, A. (Adolphe), 1804-1887, Atkinson, E. (Edmund) · New York : W. Wood · leaf 556
Iig- 523- mirrors with plane faces, and which can be so inclined in all positions thatthe reflected light may be transmitted in any given direction (fig. 523\When these mirrors are suitably arranged, the seven reflected pencils maybe caused to fall on the ceiling, in such a manner as to form seven…
Physics
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