Transactions of the Cambridge Philosophical SocietyUniversity Press, 1822 |
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الصفحة 5
... distance from each , according to the scale required . Let the distance of the eye , and consequently that of the paper , be indefinitely in- creased , so that the size of the object may be inconsiderable in respect of it . It is ...
... distance from each , according to the scale required . Let the distance of the eye , and consequently that of the paper , be indefinitely in- creased , so that the size of the object may be inconsiderable in respect of it . It is ...
الصفحة 6
... distance , as before explained , in a diagonal of the cube produced . DEFINITIONS . The last - mentioned line may be called the line of sight . Let a certain point be assumed in the object , as for example C , fig . 2 , and be ...
... distance , as before explained , in a diagonal of the cube produced . DEFINITIONS . The last - mentioned line may be called the line of sight . Let a certain point be assumed in the object , as for example C , fig . 2 , and be ...
الصفحة 7
... distances , namely , first its perpendicular distance from the regulating horizontal plane , ( that is , the hori- zontal plane passing through the regulating point ) secondly , the perpendicular distance of that point , where the ...
... distances , namely , first its perpendicular distance from the regulating horizontal plane , ( that is , the hori- zontal plane passing through the regulating point ) secondly , the perpendicular distance of that point , where the ...
الصفحة 10
... distance representing the breadth of the wheel , and then tracing , both the exterior , and interior circles of the wheel , and of the bush on which it is fixed , as far as they are visible . Care should be taken to represent the top of ...
... distance representing the breadth of the wheel , and then tracing , both the exterior , and interior circles of the wheel , and of the bush on which it is fixed , as far as they are visible . Care should be taken to represent the top of ...
الصفحة 11
... distances , not only in the isometrical directions , but in others also . And this may We may remark , that if a cone be ... distance from it , so as to describe the surface of a cone , all other lines parallel to it , in any of its ...
... distances , not only in the isometrical directions , but in others also . And this may We may remark , that if a cone be ... distance from it , so as to describe the surface of a cone , all other lines parallel to it , in any of its ...
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ABCD acid angle Apophyllite appearance axis ball beds carbonate of lime centre character chlorite schist clay slate cliffs coast colour compact composed considerable Cornwall Cove crystalline crystals cube cylinder decomposing decomposition described deviation direction distance district dyke earthy East equation examination exhibited Fellow felspar fissures formation fracture fragments function Galvanic gazometer granite granite veins granular green green-stone greywacké Helford river horizontal hornblende hydrogen inches instance intermixed irregular killas laminæ limestone Llanbabo Llaneilian Llanerchymedd Llanfaelog Llangefni Llanrhyddlad magnetic mass mica mineral muriate Nare point nature nearly needle North observed occur old red sandstone parallel particles passing perpendicular phenomena piston plane plate polarization porphyritic portion present pyroxene quartz quartz rock resembling Rhoscolyn schistose schorl serpentine side slaty South specimens steatite strata structure substance surface texture trace Trin ureters variety vertical whole wire