Venturimeter

Venturimeter is an instrument used to measure the discharge of liquid flowing in a pipe. It consists of three parts, i.e the converging cone, the throat and the diverging cone. The length of the divergent cone is made about three to four times convergent cone in order to avoid tendency of breaking away the stream of liquid and to minimise…

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Viscous Flow

We have already learned that viscosity (also called absolute or dynamic viscosity) is the property of a liquid which offers resistance to the movement of one layer of liquid over another adjacent layer of liquid. In other words, viscosity is the property of a liquid which controls its rate of flow. The viscosity of a…

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Wien’s Displacement Law

The Wien’s Displacement Law states that a black body having a wavelength (λmax) carrying the maximum energy is inversely proportional to the absolute temperature (T). λmax * T = b Where, λmax  =  Wavelength of maximum intensity in meters,T  =  Temperature of the black body in kelvins, Image Credits: Hyperphysics b  = Wien’s displacement constant  =  2.898 × 10-3 meter.kelvins Wien’s Displacement law…

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Water Hand Pump – Parts and Principle

Water hand pumps are manually operated pumps; They are used for bringing water from earth underground to earth surface and is used in every country for a variety of industrial, marine, irrigation and household purposes.Image shown below is the typical design of Hand Pump. Hand Pump Parts: §  Handle §  Pump rod §  water outlet §  Piston §  Piston valve §  Foot valve §  Rising…

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