Transactions of the Cambridge Philosophical SocietyUniversity Press, 1822 |
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الصفحة 11
... surface of a cone , all other lines parallel to it , in any of its positions , will be isometrical , as they respect one another . be done , by a series of similar concentric ellipses B 2 Professor FARISH on Isometrical Perspective . 11.
... surface of a cone , all other lines parallel to it , in any of its positions , will be isometrical , as they respect one another . be done , by a series of similar concentric ellipses B 2 Professor FARISH on Isometrical Perspective . 11.
الصفحة 17
... surface of the earth , as well as what is above it . It may be applied to geological purposes , and give , not only the order of the strata , but their variations , and their geographical situations . And for this purpose it might be ...
... surface of the earth , as well as what is above it . It may be applied to geological purposes , and give , not only the order of the strata , but their variations , and their geographical situations . And for this purpose it might be ...
الصفحة 18
... surface above : marking also the veins , and strata , in which they run . For if the artist knows what is beneath the surface , he has no difficulty in representing it as trans- parent . He must be careful however not to perplex himself ...
... surface above : marking also the veins , and strata , in which they run . For if the artist knows what is beneath the surface , he has no difficulty in representing it as trans- parent . He must be careful however not to perplex himself ...
الصفحة 22
... surface , will either both undergo or both not undergo a separation into two pencils , without any distinction arising from the place of the ray in the prismatic spectrum . Were this the case , the two axes would be fixed lines within ...
... surface , will either both undergo or both not undergo a separation into two pencils , without any distinction arising from the place of the ray in the prismatic spectrum . Were this the case , the two axes would be fixed lines within ...
الصفحة 28
... surface being ground away , and a good polish communicated to them , their thicknesses were taken by the sphærometer and found respectively 165900 and 94499 millionths of an inch . On examining them separately in polarized light , I was ...
... surface being ground away , and a good polish communicated to them , their thicknesses were taken by the sphærometer and found respectively 165900 and 94499 millionths of an inch . On examining them separately in polarized light , I was ...
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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