Further Report On the Bore of the Tsien-Tang-Kiang
The book Further Report On the Bore of the Tsien-Tang-Kiang was written by author William Usborne Moore Here you can read free online of Further Report On the Bore of the Tsien-Tang-Kiang book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Further Report On the Bore of the Tsien-Tang-Kiang a good or bad book?
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In the first place there is the difficulty of focus. No boat, of course, is in the river for 5 hours before the flood comes in ; and, in fine weather, there is not sufficient S 11508— 200— 2/93 Wt 24738 D & S, ripple to make a definition clea?- eaoijigii for the purpose. Then, whatever place is selected, it must not be less than 14 feet above the low line of the river, and somewhere at the side. The speed at which the flood approaches is so great, (20 feet a second,) that tl^e. exp.o,8Tjre must... be limited to a fraction of a second. See this impression of a half plate, which I exposed by cap, for one second. If the sun is obscured, as it generally was with us at the time the Bore passed, this great speed gives th^ photographer a poor chance. Finally, no photo, whiqh gives a distinct view of the front of the Bore within, .5,00 yards, co^iprises more than a portion of its breadth ; and as the camera is, necessarily, much nearer one side, the highest part of the cascade, which'is 350 yards from the Haining shore and retarded, is not shown to advantage in perspective.
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