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Keywords: SPHERICAL
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Journal Articles
Minutes of the Proceedings of the Institution of Civil Engineers (1894) 117 (1894): 341–352.
Published: 01 January 1894
... of refraction at the outer face. With the view of taking advantage of large burners, Messrs. D. and T. Stevensonhavedesignedrefractors, whichthey havetermed "hyper-radiant," of 1,330 millimetres focal distance. They have also taken advantage of the spherical form, rendering it possible t o constructrefractors...
Journal Articles
Minutes of the Proceedings of the Institution of Civil Engineers (1893) 111 (1893): 296–325.
Published: 01 January 1893
...A BREBNER © Thomas Telford and ICE 1893 LIGHTHOUSES LENSES LIGHTS ILLUMINATION RAYS SPHERICAL FLAMES PRISMS POWER 296 BREBNER ON LIGHTHOUSELENSES. [Selected (Papev No. 2660.) Relative Powers of Lighthouse Lenses. By ALANBREBXEBR.,S,c., Assoc. M. Inst. C.E. THEpurpose...
Journal Articles
Minutes of the Proceedings of the Institution of Civil Engineers (1885) 80 (1885): 283–317.
Published: 01 January 1885
...H H D HAY © Thomas Telford and ICE 1885 TRIGONOMETRY SURVEYING TRIANGULATION ACCURACY CALCULATIONS SURVEYS THEODOLITES SPHERICAL BEARINGS INSTRUMENTS TRIANGLES METHODS papers.] DALRYMPLE-HAY ON TRIGONONETRICAL SURVEYING. 283 (Students Paper No. 181.) Trigonometrical...
Journal Articles
Minutes of the Proceedings of the Institution of Civil Engineers (1867) 26 (1867): 477–506.
Published: 01 January 1867
... SPHERICAL AZIMUTH FLASHING FLAMES CATADIOPTRIC METALS MIRRORS CONDENSING RAYS SEA SAFETY NAVIGATION AIDS OPTICAL APPARATUS OF LIGHTHOUSES. 477 May 7, 1867. CHARLES HUTTON GREGORY, Vice-President, in the Chair. The following Candidates were balloted for and duly elected :- HARRYFOOTNEanRd...
Journal Articles
Minutes of the Proceedings of the Institution of Civil Engineers (1837) 1 (1837): 22.
Published: 01 January 1837
...H GUY; B DONKIN © Thomas Telford and ICE 1837 BALLS SPHERICAL FIGURES METALS GLASS AGATE HARD SUBSTANCES FORMS GRINDING LATHES 22 boats completed the distance from New York to Albany, mhich was not less than 150 miles, inten hours. The speed of these boats, as compared...
