Transactions of the Cambridge Philosophical SocietyUniversity Press, 1822 |
من داخل الكتاب
النتائج 1-5 من 18
الصفحة viii
... 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 Cambridge : by Rev. Professor LEE ..... 241 249 ...
... 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 Cambridge : by Rev. Professor LEE ..... 241 249 ...
الصفحة 25
... ( Apophyllite ) which possesses a single axis of double refraction , has been noticed by Dr. Brewster , and since shewn in my paper already alluded to , to indicate an action on polarized light very nearly the same for all the colours ...
... ( Apophyllite ) which possesses a single axis of double refraction , has been noticed by Dr. Brewster , and since shewn in my paper already alluded to , to indicate an action on polarized light very nearly the same for all the colours ...
الصفحة 28
... are in millionths of an inch , for the sake of placing in evidence their proportion to the lengths of the fits of easy transmission and reflexion . TABLE II . Second variety of Apophyllite in olive oil 28 Mr. HERSCHEL on the Tints.
... are in millionths of an inch , for the sake of placing in evidence their proportion to the lengths of the fits of easy transmission and reflexion . TABLE II . Second variety of Apophyllite in olive oil 28 Mr. HERSCHEL on the Tints.
الصفحة 29
Cambridge Philosophical Society. TABLE II . Second variety of Apophyllite in olive oil . Index of refraction 1.0497 . Thickness of the plate = 94499 . Incidence . Ordinary Pencil . Extraordinary Pencil . 0 ° 0 ' White . Black . White ...
Cambridge Philosophical Society. TABLE II . Second variety of Apophyllite in olive oil . Index of refraction 1.0497 . Thickness of the plate = 94499 . Incidence . Ordinary Pencil . Extraordinary Pencil . 0 ° 0 ' White . Black . White ...
الصفحة 31
... Apophyllite , on the differently coloured Rays of the Spectrum . Name of Colour . Value of 1 . Value of 1000000 Number of Observations . Extreme red . 20213 49.475 20 Mean orange . 25465 39.270 20 yellow . 30374 32.923 20 green . 38057 ...
... Apophyllite , on the differently coloured Rays of the Spectrum . Name of Colour . Value of 1 . Value of 1000000 Number of Observations . Extreme red . 20213 49.475 20 Mean orange . 25465 39.270 20 yellow . 30374 32.923 20 green . 38057 ...
طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
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