Putnam's Magazine: Original Papers on Literature, Science, Art, and National Interests, Volume 8G.P.Putnam & Company, 1856 |
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Pagina 209
... light - house illumina- tion . If , then , we conceive a simple , naked light , burning on the summit of a tower on an ocean headland , the rays would issue in all directions from the flame as a centre , though only those portions of ...
... light - house illumina- tion . If , then , we conceive a simple , naked light , burning on the summit of a tower on an ocean headland , the rays would issue in all directions from the flame as a centre , though only those portions of ...
Pagina 210
... light , and must leave the front radiation wholly un- corrected . Except for this loss of light and front radiation , a series of lamps on faces of a revolving frame , each lamp with its paraboloid mirror attached , would make up a ...
... light , and must leave the front radiation wholly un- corrected . Except for this loss of light and front radiation , a series of lamps on faces of a revolving frame , each lamp with its paraboloid mirror attached , would make up a ...
Pagina 212
... light combination , besides the modifications for different orders of fixed - lights . For a revolving lens - light , a regular polygon is assumed as a basis , on which to erect faces of glass refractors and prisms , operating as in the ...
... light combination , besides the modifications for different orders of fixed - lights . For a revolving lens - light , a regular polygon is assumed as a basis , on which to erect faces of glass refractors and prisms , operating as in the ...
Sommario
Lord Cockburns Memoirs of his Times | 328 |
The Confidential Correspondence of Napoleon | 434 |
The getting up of booksDred by | 539 |
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