Lenses and systems of lenses, treated after the manner of Gauss (1884)
Pendlebury, Charles · Cambridge, Deighton, Bell, and Co. · leaf 28
QP^Q be the paths of any two rayswhich proceed from it in the plane of the paper, and whichmeet the tangent plane at the vertex at P, and P^ respec-tively ;^ Q being the point where they meet together afterrefraction. Also let QP^Q be a third ray which crosses the tangentplane at P^ and meets the… … Through F and F draw straight lines perpendicular tothe axis, and meeting the rays at the points i),, Z?,, Z>, andi),, Z>;, nj respectively. We have then FD,-]-FI)\ = JP„ and FI)^ + FD\ = AP,; 14 LENSES AND SYSTEMS OP LENSES. therefore, by subtraction, therefore -5-5- + pp - » therefore, by…
Lenses
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