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 521
re the rayLK will meet the axis after reflection in the point /, between the centre Cand the principal focus F. So long as the aperture of the mirror does notexceed a small number of degrees, all the rays from the point L will inter-sect after reflection in the point /. This point is called the… … 504 On Light. [525- On considering the figure 463 it will be seen that when the point L isbrought near to or removed from the centre C, its conjugate focus approachesor recedes in a corresponding manner, for the angles of incidence and re-flection increase or decrease together. If the point L…
Physics
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