Transactions of the Cambridge Philosophical SocietyUniversity Press, 1822 |
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الصفحة 44
... crystalline forms , their state of aggregation or proximity to each other , in virtue of which each individual molecule turns round the plane of polarization of a ray traversing it , through a certain minute but determinate angle ...
... crystalline forms , their state of aggregation or proximity to each other , in virtue of which each individual molecule turns round the plane of polarization of a ray traversing it , through a certain minute but determinate angle ...
الصفحة 45
... under favourable circumstances , produce a sensible modification and deviation from symmetry in their crystalline form , Mr. HERSCHEL on Polarization by Rock Crystal . 45 liarities in its Crystallization: by Mr HERSCHEL.
... under favourable circumstances , produce a sensible modification and deviation from symmetry in their crystalline form , Mr. HERSCHEL on Polarization by Rock Crystal . 45 liarities in its Crystallization: by Mr HERSCHEL.
الصفحة 46
Cambridge Philosophical Society. modification and deviation from symmetry in their crystalline form , such as might arise for example , from a preference given to more rapid laws of decrement on some of the angles and edges than on those ...
Cambridge Philosophical Society. modification and deviation from symmetry in their crystalline form , such as might arise for example , from a preference given to more rapid laws of decrement on some of the angles and edges than on those ...
الصفحة 47
... crystalline form ( among other characters ) can lead us to conjecture what may prove the direction of rotation in a given specimen of rock crystal previous to trial , but as crystals of this variety are comparatively rare it seemed not ...
... crystalline form ( among other characters ) can lead us to conjecture what may prove the direction of rotation in a given specimen of rock crystal previous to trial , but as crystals of this variety are comparatively rare it seemed not ...
الصفحة 51
... crystalline fragments ( some perhaps of one kind , some of another ) of which it consists , would , among so many thousands , compensate one another . J. F. W. HERSCHEL . SLOUGH , March 15 , 1820 . NOTE . THE general fact announced in ...
... crystalline fragments ( some perhaps of one kind , some of another ) of which it consists , would , among so many thousands , compensate one another . J. F. W. HERSCHEL . SLOUGH , March 15 , 1820 . NOTE . THE general fact announced in ...
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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