Transactions of the Royal Scottish Society of Arts, Volumen4Neill & Company, 1856 Vol. 1- includes the proceedings of the society. |
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Página 4
... angles with the diameter which passes through the point of contact and a straight line drawn from that point to the focus . It must be obvious , however , that this instrument is a very im- perfect one . The diverging rays which are ...
... angles with the diameter which passes through the point of contact and a straight line drawn from that point to the focus . It must be obvious , however , that this instrument is a very im- perfect one . The diverging rays which are ...
Página 6
... angle from it as the outer lips of the paraboloid . The hemispherical reflector occupies the place of the parabolic conoid which has been cut off behind the parameter . The flame is at once in the centre of the hemispherical mirror and ...
... angle from it as the outer lips of the paraboloid . The hemispherical reflector occupies the place of the parabolic conoid which has been cut off behind the parameter . The flame is at once in the centre of the hemispherical mirror and ...
Página 9
... angle formed by the radius with the horizontal axis of the instru- ment varies from nearly 90 ° down to zero , as shewn in fig . 9. Where those angles vanish at a ' , a conoid will result , having the radius of its base equal to the ...
... angle formed by the radius with the horizontal axis of the instru- ment varies from nearly 90 ° down to zero , as shewn in fig . 9. Where those angles vanish at a ' , a conoid will result , having the radius of its base equal to the ...
Página 12
... angles to the emergent rays . Figs . 15 , 16 , shew an adaptation of this plan to an ordinary - sized reflec- tor , which does not require separate explanation . M M are silvered plane mirrors . Holophotal Quadrant . No want probably ...
... angles to the emergent rays . Figs . 15 , 16 , shew an adaptation of this plan to an ordinary - sized reflec- tor , which does not require separate explanation . M M are silvered plane mirrors . Holophotal Quadrant . No want probably ...
Página 13
... deviation , and will continue to diverge . On reaching the straight side , each diverging ray will be totally reflected at The right angles to its former direction , and will pass System of Illuminating Lighthouses . 13.
... deviation , and will continue to diverge . On reaching the straight side , each diverging ray will be totally reflected at The right angles to its former direction , and will pass System of Illuminating Lighthouses . 13.
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Términos y frases comunes
Alex Alexander angle apparatus applied arch architect axis ball caisson canal carriage centre Chair coal colour colour-blind Committee constructed Convener David DAVID LANDALE decimal Description diameter disc Donations were laid Drawings Edinburgh effect engineer farthings feet fixed following Donations George George Wilson Glasgow glass Haarlem harbour holophotal improvement inches instrument iron James JAMES TOD John KEITH PRIZE Leith light lighthouse London magnet means method Minie ball Minutes of last motion paper placed plane Plate present President Prizes Professor pumps Railway Railway Signal rays read and approved Read and exhibited Report revolving river River Clyde Robert rotation Royal Scottish Society Sang screw Session side signal Society of Arts Society's Silver Medal spandril steam Stevenson Stornoway Street surface Thanks voted theodolite Thomas Thomas Grainger Thomas Stevenson tion tons Torbane vessels weight wheel William WILLIAM SWAN Wilson
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