Transactions of the Cambridge Philosophical SocietyUniversity Press, 1822 |
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الصفحة viii
... coloured Rays exhibited by certain varieties of Apophyllite : by J. F. W. HERSCHEL , Esq . Notice of the Astronomical Tables of Mohammed Abibeker Al Farsi , two copies of which are preserved in the Public Library of the Uni- versity of ...
... coloured Rays exhibited by certain varieties of Apophyllite : by J. F. W. HERSCHEL , Esq . Notice of the Astronomical Tables of Mohammed Abibeker Al Farsi , two copies of which are preserved in the Public Library of the Uni- versity of ...
الصفحة 18
... colours , for the purposes of dis- tinction , and he must use a considerable address in throwing out such lines as would be of little use , and in retaining such as will produce the effect of a picture ; which should be well preserved ...
... colours , for the purposes of dis- tinction , and he must use a considerable address in throwing out such lines as would be of little use , and in retaining such as will produce the effect of a picture ; which should be well preserved ...
الصفحة 22
... colour of the intromitted ray , a violet ray being separated into two pencils , when incident in the same direction in which a red one would be refracted singly . This re- markable fact , which is almost universal in crystals with two ...
... colour of the intromitted ray , a violet ray being separated into two pencils , when incident in the same direction in which a red one would be refracted singly . This re- markable fact , which is almost universal in crystals with two ...
الصفحة 23
... coloured rays with an energy varying according to the same law precisely . To this it may be objected , that from the result of a most elaborate examination of the colours exhibited by sulphate of lime , rock crystal , and mica , M ...
... coloured rays with an energy varying according to the same law precisely . To this it may be objected , that from the result of a most elaborate examination of the colours exhibited by sulphate of lime , rock crystal , and mica , M ...
الصفحة 24
... colour , the lengths of the fits in different media are proportional to the sines of refraction corresponding to a ... colours which their laminæ of different 24 Mr. HERSCHEL on the Tints.
... colour , the lengths of the fits in different media are proportional to the sines of refraction corresponding to a ... colours which their laminæ of different 24 Mr. HERSCHEL on the Tints.
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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