A hydrometer measures the density or specific gravity of liquids. This works according to static buoyancy. Static buoyancy is a force on a body in liquid or gases that opposes gravity. This is also how hot air balloons, for example, rise in the air. In a hydrometer, a body immersed in liquid is lowered until the weight force of the displaced liquid equals the weight force of the immersed body. Provided the density of the liquid is low, a body of the same weight continues to be immersed in it. In practice, the liquid is poured into a measuring vessel defined from glass. Then a hydrometer is selected that corresponds to the measuring range of the approximate density of the liquid. This is immersed in the liquid. The value (density) of the immersed hydrometer can then be read from the surface of the liquid.
Hydromètre
Description
A hydrometer measures the density or specific gravity of liquids. This works according to static buoyancy. Static buoyancy is a force on a body in liquid or gases that opposes gravity. This is also how hot air balloons, for example, rise in the air. In a hydrometer, a body immersed in liquid is lowered until the weight force of the displaced liquid equals the weight force of the immersed body. Provided the density of the liquid is low, a body of the same weight continues to be immersed in it. In practice, the liquid is poured into a measuring vessel defined from glass. Then a hydrometer is selected that corresponds to the measuring range of the approximate density of the liquid. This is immersed in the liquid. The value (density) of the immersed hydrometer can then be read from the surface of the liquid.
A hydrometer measures the density or specific gravity of liquids. This works according to static buoyancy. Static buoyancy is a force on a body in liquid or gases that opposes gravity. This is also how hot air balloons, for example, rise in the air. In a…
A hydrometer measures the density or specific gravity of liquids. This works according to static buoyancy. Static buoyancy is a…
Fournisseur
Les fournisseurs suivants proposent des produits Hydromètre.
Avantor - VWR International GmbH
Th. Geyer GmbH & Co. KG
Fisher Scientific GmbH
Sigma-Aldrich Chemie GmbH
Labfinder Shop
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