Handbook of the Polariscope and Its Pracitcal ApplicationsMacmillan, 1882 - 262 Seiten |
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100 cubic centimetres 50 cubic acetic acid active substance Alcohol of 97 alkaloids amount Amygdalin analyzer angle of rotation anhydrous aqueous solutions Asparagin Biot calculated camphor cane-sugar CH₂ Chem Chim Cinchonidine cinchonine CO.OH colour concentration constant crystals decimals decimetre tube degree density determined dextro dextro-rotatory dilute ether exhibit field of vision flask formula glass glucose graduated grammes grammes of sugar H₂ H₂O Hesse L. A. hydrochloric acid inactive instrument Jahresb Lævo-rotatory left-rotating length light Malic Acid mannite metres millimetres Mitscherlich mixture molecules Nicol nicotine number of grammes observed obtained oil of turpentine optical activity Pasteur percentage Phys plane of polarization Pogg polariscope principal section prism proportion pycnometer quartz quartz wedges Quinidine quinine refractive right-rotating rotatory power saccharimeter salt scale sodium solution containing solvent specific gravity specific rotation sugar in 100 sulphate tartaric acid tartrate temperature tion Tollens values weight Wild's zero-point
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Seite 2 - Q. \, r behaves differently in two different directions at right angles to each other, one direction being in the plane of incidence or reflection, abc, the other in a plane at right angles therewith. The ray is polarized, and the former of the two planes is its plane of polarization. We can therefore recognize a ray as polarized, and determine the position of its plane of polarization, by permitting it to fall upon a glass mirror at an angle of 55°. If the mirror be turned about the ray as an axis,...
Seite 120 - FlO. 35. appear equally illuminated in every position of the analyzer. But, if the polarizing nicol is inclined to AB at an angle a, the plane of polarization of the rays passing through the quartz plate will undergo deviation, through an angle in the opposite direction. It happens from this, that when in the uncovered half of the field, the plane of polarization has the direction AC, in the other half it will have A C'.
Seite 120 - AB — the two halves of the field of vision will then appear equally dark or equally bright in every position of the analyzer. But if the polarizer be inclined to AB, at an angle a, the plane of polarization of the rays passing through the quartz plate will undergo deviation through an equal angle, a-, in the opposite direction. Therefore, when in the uncovered half the plane of polarization has the direction AC, in the covered half it will have the direction A C-.