Brewster, David, Sir, 1781-1868, Bache, A. D. (Alexander Dallas), 1806-1867 · Philadelphia : Lea and Blanchard · leaf 222
Fig. 131. … 131., in which the sea was distinctlyseen between the ships B, C. As theship A came above the horizon, the imageC gradually disappeared, and during thistime the image Bdescended, but the shipdid not seem so near the horizon as tobring the mainmasts together. The twoimages were visible when the…
Optics
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