A capillary flow viscometer, or Ostwald viscometer, consists of a U-shaped glass tube held vertically in a controlled temperature bath. It was named after its inventor, Wilhelm Ostwald.
Capillary Attraction
Thet resistor opposes the flow of current through it becoz of its internal construction. Its material has opposing property.
the velocity of water flow within a drainage pipe; the equation is V=L/t L= Length t=time. Then the flow rate; Fr=A*V, Where A= sectional area and V = velocity.
The principle of a fuse is to have the flow to the conductor. This will give it the power.
The throttling devise can be the valve or the copper tubing that allows the flow of the refrigerant through very small opening also called as the orifice. The throttling devices allow restricted flow of the refrigerant. The throttling devices are also called as the expansion valves because when the refrigerant passes through them the pressure of the refrigerant drops down or it expands..Capillary tube is one of the most commonly used throttling devices in the refrigeration and the air conditioning systems. The capillary tube is a copper tube of very small internal diameter. It is of very long length and it is coiled to several turns so that it would occupy less space. The internal diameter of the capillary tube used for the refrigeration and air conditioning applications varies from 0.5 to 2.28 mm (0.020 to 0.09 inches). Capillary tube used as the throttling device in the domestic refrigerators, deep freezers, water coolers and air conditioners.
The essential difference between Ostwald and Ubbelohde viscometers is the method of measuring viscosity. Ostwald viscometer measures the flow time of a fixed volume of liquid through a capillary, while the Ubbelohde viscometer measures the flow time of a fixed volume of liquid out of a calibrated capillary. Additionally, the Ubbelohde viscometer is more accurate and suitable for measuring the viscosity of transparent liquids.
The first viscometer was invented by Sir William Thomson in 1866. His design was based on the principle of measuring the time it took for a liquid to flow through a capillary tube.
Ostwald's viscometer is used to measure the viscosity of liquid substances, such as oils, paints, and polymer solutions. It consists of a capillary tube through which the liquid flows, and the time it takes for the liquid to flow through the tube is used to calculate its viscosity.
A Capilliary Viscometer measures the speed at which a lquid can be forced through a narrow tube (a capillary). Thicker liquids (high viscosity like treacle) will take a lot longer to squeeze through the tube than a thin liquid (like white spirit). If you take a fluid (liquid) like blood it could be put through a Viscometer like this to see if your blood was too thick or thin. Also it could be used to check if your engine oil met up to spec. Big Subject!!!! Contact me if you want to know more...
A viscometer is used to measure the viscosity of a fluid, which is its resistance to flow. This measurement is important in various industries such as food processing, pharmaceuticals, and manufacturing, where the viscosity of a fluid can affect product quality and performance. By using a viscometer, manufacturers can ensure consistency in their products and adjust formulations as needed.
While measuring viscosity through Ostwald viscometer,diameter of the tube should be small and the flow rate should be slow and steady.
Because of abundant capillary flow.
Capillary Attraction
The viscosity of honey can be found using a viscometer, which measures the resistance of the honey to flow. By measuring the time it takes for a certain volume of honey to flow through the viscometer, the viscosity can be calculated. Honey is a non-Newtonian fluid, meaning its viscosity can change depending on factors like temperature and shear rate.
Slow flow speed in the capillary increases the efficiency of diffusion. In addition, the thin wall of the capillary helps substances to pass through efficiently.
By the process of diffusion.
E. W. Dean and D. D. Stark in 1920