 After a great variety of experiments, he found that a paddle-wheel of one half the width and weight, and with trapezium floats, was as effective in propelling a vessel as a wheel of double the width and weight with the ordinary rectangular floats. The...  Report of the Annual Meeting - Strona 101autor: British Association for the Advancement of Science - 1842Pełny widok - Informacje o książce
 | Perry Fairfax Nursey - 1841 - Liczba stron: 538
...vessel as a wheel of double the width and weight with the ordinary rectangular floats. The Admiralty bad permitted him to fit her Majesty's steamship, African,...in the Archimedes. In examining the wings of birds aud the tails of swift fish, he had been particularly struck with the adaptation of shape to the speed... | |
 | 1841 - Liczba stron: 542
...vessel as a wheel of double the width and weight with the ordinary rectangular floats. The Admiralty bad permitted him to fit her Majesty's steamship, African,...had been applied with success by Mr. Smith in the Archime des. In examining the wings of birds and the tails of swift fish, he had been particularly... | |
 | 1842 - Liczba stron: 934
...with the ordinary rectangular floats. The Admiralty had permitted him to fit Her Majesty's steam ship African with these wheels, and he had perfect confidence...contrast between the shape of the tail of the codfish, a slow moving fish, and the tail of the mackarel, a rapid fish, was very remarkable, — the latter going... | |
 | 1842 - Liczba stron: 886
...with the ordinary rectangular floats. The Admiralty had permitted him to fit Her Majesty's steam ship African with these wheels, and he had perfect confidence...contrast between the shape of the tail of the codfish, a slow moving fish, and the tail of the mackarel, a rapid fish, was very remarkable, — the latter going... | |
 | 1849 - Liczba stron: 1068
...my own results. (See p. 45.) Mr. Rennie states that the Admiralty had permitted him to fit HM ship African with these wheels, and he had perfect confidence in the success of the experiment; but I have not been able to find any account of the results of this trial upon a large scale. Measures... | |
 | William Laxton - 1849 - Liczba stron: 486
...very well with my own results. Mr. Rennie states that the Admiralty had permitted him to fit HM ship African with these wheels, and he had perfect confidence in the success of the experiment; but I have not been able to find any account of the results of this trial upon a large scale. Measures... | |
 | 1849 - Liczba stron: 516
...my own results. (See p. 45.) Mr. Rennie states that the Admiralty had permitted him to fit HM ship African with these wheels, and he had perfect confidence in the success of the experiment; but I hare not been able to find any account of the results of this trial upon a large scale. Measures... | |
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