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School Castelvė |
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Funzione For measuring the density of solids. | |||
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Description It is formed by a metal tube that ends with two cones. At one end a disk is used to place the body to be measures, at the other end we hang a conic basket that is used as ballast. | |||
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School Spano |
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Function For measuring the density of liquids. | |||
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Description It is made of blown glass. The lower bulb is filled with pellets. | |||
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School Spano |
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Function For measuring the density or specific gravity of liquids and solutions. | |||
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Description It is formed by a floater of glass ballasted with lead and graduated in the upper part. It floats vertically. The measurement happens on the basis of the law: immersed volumes are inversely proportional to their specific weights. The density is read in correspondence of the water line. | |||
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School Spano |
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Function For measuring the amount of alcohol in a liquid. | |||
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Description It is a densimeter calibrated to measure the amount of alcohol in liquids. | |||
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School Spano |
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Function For measuring the quantity of acid in a liquid. | |||
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Description It is a hydrometer calibrated for measuring the amount of acid in a liquid. | |||
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School Spano |
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Function For measuring quantity of ammonia in a liquid. | |||
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Description It is a hydrometer calibrated for measuring the amount of ammonia in a liquid. | |||
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School Spano |
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Function For measuring the density of liquids. | |||
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Description It is a hydrometer calibrated for measuring the density of a liquid. | |||
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School Spano |
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Function For measuring the amount of sugar in the beer. | |||
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Description It is a hydrometer used in the beer industry for measuring the amount of sugar in the must of beer and in beer. The scale is calibrated to have the zero at a temperature of 17,5° C. In the densimeter a thermometer is built to correct the value read at different temperatures from that of calibration. For any degree over the zero we add a tenth, while we subtract a tenth for any degree under the zero. | |||
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School Spano |
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Function For experiments on the surface tension and on the flattening produced by the centrifugal force on a drop of oil suspended in an alcoholic solution. | |||
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Description Besides the axe of rotation and the crank are assembled on the same support that runs along a vertical pole, so as to able to can leave the large drop of oil free in the alcoholic solution. | |||
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School Azuni (1), Spano (2), Pellegrini (3) |
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Function To verify the Borelli - Jurin's law. |
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Description (1) It is formed by four U shaped tubes, each with a branch of a one-centimeter diameter communicating with a capillary tube. The tubes are fixed on the same table and have a white celluloid graduated scale. The internal diameters of the capillary branches are different to verify the Borelli - Jurin's law. | |||
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School Spano |
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Function Those little tanks serve to show directly or by projection, the capillary depressions of the mercury and the rises of the liquids that wet the glass. | |||
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Description The profiles of the meniscuses that are formed between the perpendicular walls are also arcs of equilateral hyperboles. The little tanks are also useful in optical experiments. When they are put near one another we obtain a pane with parallel sides of variable thickness. | |||
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School University (1), University (2) |
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Function For measuring the surface tension of a liquid. | |||
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Description It is formed by a pipette that ends with a capillary tube. We obtain the measure comparing the number of the falling drops of the liquid under examination, and that of a liquid of reference. | |||
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School Spano |
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Function Measure of the endosmosis i.e. the most intense current of the osmosis. | |||
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Description The tube of rise is applied filling the container closed by the parchment with the liquid under examination. For this the neck is polished with emery and the liquid rises in the tube for a centimetre. Then we make the celluloid scale applied to the tube slide until the zero corresponds to the free surface of the liquid. After this, we can introduce the endosmometer into the cup containing the second liquid. A ring with three rays is used to lay the endosmometer on the edge of the cup. | |||
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School Spano |
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Function To show the characteristics of the immiscible liquids. | |||
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Description It is a bottle that contains four inmiscible and variously coloured liquids. By shaking it, we obtain a sort of emulsion, but if the bottle is left at rest the liquids separate again. | |||
