 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...  The Year-book of Facts in Science and Art - Seite 3herausgegeben von - 1842Vollansicht - Über dieses Buch
 | Perry Fairfax Nursey - 1841 - 538 Seiten
...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 - 542 Seiten
...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 - 934 Seiten
...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 - 886 Seiten
...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 - 1068 Seiten
...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 - 486 Seiten
...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 - 516 Seiten
...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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